1634616642 has 16 divisors (see below), whose sum is σ = 3298165920. Its totient is φ = 540050112.

The previous prime is 1634616629. The next prime is 1634616671. The reversal of 1634616642 is 2466164361.

It is a self number, because there is not a number n which added to its sum of digits gives 1634616642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204792 + ... + 1206147.

It is an arithmetic number, because the mean of its divisors is an integer number (206135370).

Almost surely, 2^1634616642 is an apocalyptic number.

1634616642 is an abundant number, since it is smaller than the sum of its proper divisors (1663549278).

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

1634616642 is a wasteful number, since it uses less digits than its factorization.

1634616642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411057.

The product of its digits is 124416, while the sum is 39.

The square root of 1634616642 is about 40430.3925531277. The cubic root of 1634616642 is about 1177.9819576718.

The spelling of 1634616642 in words is "one billion, six hundred thirty-four million, six hundred sixteen thousand, six hundred forty-two".