1642306995 has 96 divisors (see below), whose sum is σ = 3483217920. Its totient is φ = 726433920.

The previous prime is 1642306987. The next prime is 1642306997. The reversal of 1642306995 is 5996032461.

It is not a de Polignac number, because 1642306995 - 2³ = 1642306987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1642306995.

It is not an unprimeable number, because it can be changed into a prime (1642306997) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 260541 + ... + 266769.

It is an arithmetic number, because the mean of its divisors is an integer number (36283520).

Almost surely, 2^1642306995 is an apocalyptic number.

1642306995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1642306995 is an abundant number, since it is smaller than the sum of its proper divisors (1840910925).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642306995 is an equidigital number, since it uses as much as digits as its factorization.

1642306995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6275 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1642306995 is about 40525.3870431857. The cubic root of 1642306995 is about 1179.8264120308.

The spelling of 1642306995 in words is "one billion, six hundred forty-two million, three hundred six thousand, nine hundred ninety-five".