153964418689 has 3 divisors (see below), whose sum is σ = 153964811073. Its totient is φ = 153964026306.

The previous prime is 153964418623. The next prime is 153964418701. The reversal of 153964418689 is 986814469351.

The square root of 153964418689 is 392383.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 986814469351 = 347 ⋅2843845733.

It is not a de Polignac number, because 153964418689 - 2²¹ = 153962321537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153964418689.

It is not an unprimeable number, because it can be changed into a prime (153964412689) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 196192 + ... + 588574.

It is an arithmetic number, because the mean of its divisors is an integer number (51321603691).

Almost surely, 2^153964418689 is an apocalyptic number.

153964418689 is the 392383-rd square number.

153964418689 is the 196192-nd centered octagonal number.

It is an amenable number.

153964418689 is a deficient number, since it is larger than the sum of its proper divisors (392384).

153964418689 is an frugal number, since it uses more digits than its factorization.

153964418689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784766 (or 392383 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 64.

Multiplying 153964418689 by its sum of digits (64), we get a square (9853722796096 = 3139064²).

The spelling of 153964418689 in words is "one hundred fifty-three billion, nine hundred sixty-four million, four hundred eighteen thousand, six hundred eighty-nine".