156473663 has 4 divisors (see below), whose sum is σ = 156498888. Its totient is φ = 156448440.

The previous prime is 156473633. The next prime is 156473687. The reversal of 156473663 is 366374651.

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: 366374651 = 2389 ⋅153359.

It is a cyclic number.

It is not a de Polignac number, because 156473663 - 2¹⁶ = 156408127 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 156473663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156473633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3893 + ... + 18113.

It is an arithmetic number, because the mean of its divisors is an integer number (39124722).

Almost surely, 2^156473663 is an apocalyptic number.

156473663 is a deficient number, since it is larger than the sum of its proper divisors (25225).

156473663 is a wasteful number, since it uses less digits than its factorization.

156473663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25224.

The product of its digits is 272160, while the sum is 41.

The square root of 156473663 is about 12508.9433206806. The cubic root of 156473663 is about 538.8655458876.

The spelling of 156473663 in words is "one hundred fifty-six million, four hundred seventy-three thousand, six hundred sixty-three".