1642900634 has 16 divisors (see below), whose sum is σ = 2562693120. Its totient is φ = 788966640.

The previous prime is 1642900601. The next prime is 1642900667. The reversal of 1642900634 is 4360092461.

It is an interprime number because it is at equal distance from previous prime (1642900601) and next prime (1642900667).

It is a junction number, because it is equal to n+sod(n) for n = 1642900594 and 1642900603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63074 + ... + 85229.

It is an arithmetic number, because the mean of its divisors is an integer number (160168320).

Almost surely, 2^1642900634 is an apocalyptic number.

1642900634 is a deficient number, since it is larger than the sum of its proper divisors (919792486).

1642900634 is a wasteful number, since it uses less digits than its factorization.

1642900634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148525.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 1642900634 is about 40532.7106668182. The cubic root of 1642900634 is about 1179.9685508232.

The spelling of 1642900634 in words is "one billion, six hundred forty-two million, nine hundred thousand, six hundred thirty-four".