1634138835 has 64 divisors (see below), whose sum is σ = 3100308480. Its totient is φ = 719147520.

The previous prime is 1634138827. The next prime is 1634138861. The reversal of 1634138835 is 5388314361.

It is not a de Polignac number, because 1634138835 - 2³ = 1634138827 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1494549 + ... + 1495641.

It is an arithmetic number, because the mean of its divisors is an integer number (48442320).

Almost surely, 2^1634138835 is an apocalyptic number.

1634138835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1634138835 is a deficient number, since it is larger than the sum of its proper divisors (1466169645).

1634138835 is a wasteful number, since it uses less digits than its factorization.

1634138835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628.

The product of its digits is 207360, while the sum is 42.

The square root of 1634138835 is about 40424.4831135786. The cubic root of 1634138835 is about 1177.8671697228.

The spelling of 1634138835 in words is "one billion, six hundred thirty-four million, one hundred thirty-eight thousand, eight hundred thirty-five".