901609995 has 32 divisors (see below), whose sum is σ = 1694778624. Its totient is φ = 403516800.

The previous prime is 901609981. The next prime is 901609997. The reversal of 901609995 is 599906109.

It is a happy number.

It is not a de Polignac number, because 901609995 - 2⁹ = 901609483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (901609997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208021 + ... + 212310.

It is an arithmetic number, because the mean of its divisors is an integer number (52961832).

Almost surely, 2^901609995 is an apocalyptic number.

901609995 is a deficient number, since it is larger than the sum of its proper divisors (793168629).

901609995 is a wasteful number, since it uses less digits than its factorization.

901609995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420363.

The product of its (nonzero) digits is 196830, while the sum is 48.

The square root of 901609995 is about 30026.8212603332. The cubic root of 901609995 is about 966.0647576064.

The spelling of 901609995 in words is "nine hundred one million, six hundred nine thousand, nine hundred ninety-five".