1630946940 has 48 divisors (see below), whose sum is σ = 5219031552. Its totient is φ = 372787776.

The previous prime is 1630946927. The next prime is 1630946959. The reversal of 1630946940 is 496490361.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1630946892 and 1630946901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1941184 + ... + 1942023.

It is an arithmetic number, because the mean of its divisors is an integer number (108729824).

Almost surely, 2^1630946940 is an apocalyptic number.

1630946940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630946940 is an abundant number, since it is smaller than the sum of its proper divisors (3588084612).

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

1630946940 is a wasteful number, since it uses less digits than its factorization.

1630946940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883226 (or 3883224 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 1630946940 is about 40384.9840906246. The cubic root of 1630946940 is about 1177.0997769835.

The spelling of 1630946940 in words is "one billion, six hundred thirty million, nine hundred forty-six thousand, nine hundred forty".