1634968780 has 24 divisors (see below), whose sum is σ = 3435232752. Its totient is φ = 653644992.

The previous prime is 1634968771. The next prime is 1634968781. The reversal of 1634968780 is 878694361.

It is a happy number.

1634968780 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1634968781) 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, 19654 + ... + 60466.

It is an arithmetic number, because the mean of its divisors is an integer number (143134698).

Almost surely, 2^1634968780 is an apocalyptic number.

1634968780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1634968780 is an abundant number, since it is smaller than the sum of its proper divisors (1800263972).

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

1634968780 is a wasteful number, since it uses less digits than its factorization.

1634968780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42825 (or 42823 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1634968780 is about 40434.7471860527. The cubic root of 1634968780 is about 1178.0665406899.

The spelling of 1634968780 in words is "one billion, six hundred thirty-four million, nine hundred sixty-eight thousand, seven hundred eighty".