1642379292 has 18 divisors (see below), whose sum is σ = 4151569968. Its totient is φ = 547459752.

The previous prime is 1642379279. The next prime is 1642379329. The reversal of 1642379292 is 2929732461.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22810788 + ... + 22810859.

It is an arithmetic number, because the mean of its divisors is an integer number (230642776).

Almost surely, 2^1642379292 is an apocalyptic number.

1642379292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1642379292 is an abundant number, since it is smaller than the sum of its proper divisors (2509190676).

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

1642379292 is a wasteful number, since it uses less digits than its factorization.

1642379292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45621657 (or 45621652 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 1642379292 is about 40526.2790297851. The cubic root of 1642379292 is about 1179.8437243967.

The spelling of 1642379292 in words is "one billion, six hundred forty-two million, three hundred seventy-nine thousand, two hundred ninety-two".