1642337970 has 64 divisors (see below), whose sum is σ = 4851221760. Its totient is φ = 346514688.

The previous prime is 1642337951. The next prime is 1642337993. The reversal of 1642337970 is 797332461.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298065 + ... + 303524.

It is an arithmetic number, because the mean of its divisors is an integer number (75800340).

Almost surely, 2^1642337970 is an apocalyptic number.

1642337970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1642337970 is an abundant number, since it is smaller than the sum of its proper divisors (3208883790).

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

1642337970 is a wasteful number, since it uses less digits than its factorization.

1642337970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601619.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 1642337970 is about 40525.7692092328. The cubic root of 1642337970 is about 1179.8338294206.

The spelling of 1642337970 in words is "one billion, six hundred forty-two million, three hundred thirty-seven thousand, nine hundred seventy".