1630870040 has 16 divisors (see below), whose sum is σ = 3669457680. Its totient is φ = 652348000.

The previous prime is 1630869991. The next prime is 1630870067. The reversal of 1630870040 is 400780361.

It is a junction number, because it is equal to n+sod(n) for n = 1630869985 and 1630870012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20385836 + ... + 20385915.

It is an arithmetic number, because the mean of its divisors is an integer number (229341105).

Almost surely, 2^1630870040 is an apocalyptic number.

1630870040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630870040 is an abundant number, since it is smaller than the sum of its proper divisors (2038587640).

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

1630870040 is a wasteful number, since it uses less digits than its factorization.

1630870040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40771762 (or 40771758 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1630870040 is about 40384.0319928558. The cubic root of 1630870040 is about 1177.0812764030.

The spelling of 1630870040 in words is "one billion, six hundred thirty million, eight hundred seventy thousand, forty".