1630925394 has 16 divisors (see below), whose sum is σ = 3727829568. Its totient is φ = 465978672.

The previous prime is 1630925369. The next prime is 1630925411. The reversal of 1630925394 is 4935290361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 38831557 = 1630925394 / (1 + 6 + 3 + 0 + 9 + 2 + 5 + 3 + 9 + 4).

It is a Curzon 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, 19415737 + ... + 19415820.

It is an arithmetic number, because the mean of its divisors is an integer number (232989348).

Almost surely, 2^1630925394 is an apocalyptic number.

1630925394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1630925394 is an abundant number, since it is smaller than the sum of its proper divisors (2096904174).

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

1630925394 is a wasteful number, since it uses less digits than its factorization.

1630925394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38831569.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 1630925394 is about 40384.7173321790. The cubic root of 1630925394 is about 1177.0945935115.

The spelling of 1630925394 in words is "one billion, six hundred thirty million, nine hundred twenty-five thousand, three hundred ninety-four".