1642744474 has 16 divisors (see below), whose sum is σ = 2817930816. Its totient is φ = 703584000.

The previous prime is 1642744471. The next prime is 1642744513. The reversal of 1642744474 is 4744472461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642744474.

It is not an unprimeable number, because it can be changed into a prime (1642744471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14232 + ... + 59059.

It is an arithmetic number, because the mean of its divisors is an integer number (176120676).

Almost surely, 2^1642744474 is an apocalyptic number.

1642744474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1642744474 is a deficient number, since it is larger than the sum of its proper divisors (1175186342).

1642744474 is a wasteful number, since it uses less digits than its factorization.

1642744474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74901.

The product of its digits is 602112, while the sum is 43.

The square root of 1642744474 is about 40530.7842756589. The cubic root of 1642744474 is about 1179.9311637523.

The spelling of 1642744474 in words is "one billion, six hundred forty-two million, seven hundred forty-four thousand, four hundred seventy-four".