1642364680 has 64 divisors (see below), whose sum is σ = 4206556800. Its totient is φ = 571253760.

The previous prime is 1642364641. The next prime is 1642364681. The reversal of 1642364680 is 864632461.

It is a super-2 number, since 2×1642364680² = 5394723484223004800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1642364681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71025 + ... + 91264.

It is an arithmetic number, because the mean of its divisors is an integer number (65727450).

Almost surely, 2^1642364680 is an apocalyptic number.

1642364680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1642364680 is an abundant number, since it is smaller than the sum of its proper divisors (2564192120).

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

1642364680 is a wasteful number, since it uses less digits than its factorization.

1642364680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162334 (or 162330 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 1642364680 is about 40526.0987512985. The cubic root of 1642364680 is about 1179.8402254226.

The spelling of 1642364680 in words is "one billion, six hundred forty-two million, three hundred sixty-four thousand, six hundred eighty".