1642881498 has 32 divisors (see below), whose sum is σ = 3337842816. Its totient is φ = 538979328.

The previous prime is 1642881497. The next prime is 1642881503. The reversal of 1642881498 is 8941882461.

It is a self number, because there is not a number n which added to its sum of digits gives 1642881498.

It is not an unprimeable number, because it can be changed into a prime (1642881497) 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, 216586 + ... + 224042.

It is an arithmetic number, because the mean of its divisors is an integer number (104307588).

Almost surely, 2^1642881498 is an apocalyptic number.

1642881498 is an abundant number, since it is smaller than the sum of its proper divisors (1694961318).

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

1642881498 is a wasteful number, since it uses less digits than its factorization.

1642881498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8038.

The product of its digits is 884736, while the sum is 51.

The square root of 1642881498 is about 40532.4746098730. The cubic root of 1642881498 is about 1179.9639695022.

The spelling of 1642881498 in words is "one billion, six hundred forty-two million, eight hundred eighty-one thousand, four hundred ninety-eight".