901642609 has 8 divisors (see below), whose sum is σ = 1034460288. Its totient is φ = 769827840.

The previous prime is 901642607. The next prime is 901642613. The reversal of 901642609 is 906246109.

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

It is a cyclic number.

It is not a de Polignac number, because 901642609 - 2¹ = 901642607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901642607) 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, 248797 + ... + 252394.

It is an arithmetic number, because the mean of its divisors is an integer number (129307536).

Almost surely, 2^901642609 is an apocalyptic number.

It is an amenable number.

901642609 is a deficient number, since it is larger than the sum of its proper divisors (132817679).

901642609 is a wasteful number, since it uses less digits than its factorization.

901642609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501455.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 901642609 is about 30027.3643365514. The cubic root of 901642609 is about 966.0764059748.

The spelling of 901642609 in words is "nine hundred one million, six hundred forty-two thousand, six hundred nine".