6401902589 has 8 divisors (see below), whose sum is σ = 6427746528. Its totient is φ = 6376101840.

The previous prime is 6401902553. The next prime is 6401902609. The reversal of 6401902589 is 9852091046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6401902589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401902519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304559 + ... + 324899.

It is an arithmetic number, because the mean of its divisors is an integer number (803468316).

Almost surely, 2^6401902589 is an apocalyptic number.

It is an amenable number.

6401902589 is a deficient number, since it is larger than the sum of its proper divisors (25843939).

6401902589 is a wasteful number, since it uses less digits than its factorization.

6401902589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21595.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 6401902589 is about 80011.8902976301. The cubic root of 6401902589 is about 1856.8194951307.

The spelling of 6401902589 in words is "six billion, four hundred one million, nine hundred two thousand, five hundred eighty-nine".