1642995057 has 16 divisors (see below), whose sum is σ = 2408060160. Its totient is φ = 988150800.

The previous prime is 1642995049. The next prime is 1642995059. The reversal of 1642995057 is 7505992461.

It is not a de Polignac number, because 1642995057 - 2³ = 1642995049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642994997 and 1642995015.

It is not an unprimeable number, because it can be changed into a prime (1642995059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185707 + ... + 194352.

It is an arithmetic number, because the mean of its divisors is an integer number (150503760).

Almost surely, 2^1642995057 is an apocalyptic number.

It is an amenable number.

1642995057 is a deficient number, since it is larger than the sum of its proper divisors (765065103).

1642995057 is a wasteful number, since it uses less digits than its factorization.

1642995057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380204.

The product of its (nonzero) digits is 680400, while the sum is 48.

The square root of 1642995057 is about 40533.8754253772. The cubic root of 1642995057 is about 1179.9911559713.

It can be divided in two parts, 1642 and 995057, that added together give a palindrome (996699).

The spelling of 1642995057 in words is "one billion, six hundred forty-two million, nine hundred ninety-five thousand, fifty-seven".