1634309940 has 24 divisors (see below), whose sum is σ = 4576068000. Its totient is φ = 435815968.

The previous prime is 1634309933. The next prime is 1634309953. The reversal of 1634309940 is 499034361.

It is a congruent number.

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, 13619190 + ... + 13619309.

It is an arithmetic number, because the mean of its divisors is an integer number (190669500).

Almost surely, 2^1634309940 is an apocalyptic number.

1634309940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1634309940 is an abundant number, since it is smaller than the sum of its proper divisors (2941758060).

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

1634309940 is a wasteful number, since it uses less digits than its factorization.

1634309940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27238511 (or 27238509 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 1634309940 is about 40426.5994117734. The cubic root of 1634309940 is about 1177.9082784144.

The spelling of 1634309940 in words is "one billion, six hundred thirty-four million, three hundred nine thousand, nine hundred forty".