1953540489 has 16 divisors (see below), whose sum is σ = 2784265344. Its totient is φ = 1215350400.

The previous prime is 1953540367. The next prime is 1953540509. The reversal of 1953540489 is 9840453591.

It is not a de Polignac number, because 1953540489 - 2⁹ = 1953539977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1953540989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342442 + ... + 348099.

It is an arithmetic number, because the mean of its divisors is an integer number (174016584).

Almost surely, 2^1953540489 is an apocalyptic number.

It is an amenable number.

1953540489 is a deficient number, since it is larger than the sum of its proper divisors (830724855).

1953540489 is a wasteful number, since it uses less digits than its factorization.

1953540489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690608.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 1953540489 is about 44198.8742956198. The cubic root of 1953540489 is about 1250.0886313688.

The spelling of 1953540489 in words is "one billion, nine hundred fifty-three million, five hundred forty thousand, four hundred eighty-nine".