1630040412 has 96 divisors (see below), whose sum is σ = 5106737664. Its totient is φ = 390816000.

The previous prime is 1630040369. The next prime is 1630040437. The reversal of 1630040412 is 2140400361.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55839 + ... + 79862.

It is an arithmetic number, because the mean of its divisors is an integer number (53195184).

Almost surely, 2^1630040412 is an apocalyptic number.

1630040412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1630040412 is an abundant number, since it is smaller than the sum of its proper divisors (3476697252).

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

1630040412 is a wasteful number, since it uses less digits than its factorization.

1630040412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135739 (or 135737 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1630040412 is about 40373.7589530626. The cubic root of 1630040412 is about 1176.8816477390.

Adding to 1630040412 its reverse (2140400361), we get a palindrome (3770440773).

The spelling of 1630040412 in words is "one billion, six hundred thirty million, forty thousand, four hundred twelve".