1912000040 has 32 divisors (see below), whose sum is σ = 4307635080. Its totient is φ = 763798272.

The previous prime is 1912000003. The next prime is 1912000063. The reversal of 1912000040 is 400002191.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 904445476 + 1007554564 = 30074^2 + 31742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1911999982 and 1912000018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 61838.

Almost surely, 2^1912000040 is an apocalyptic number.

1912000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1912000040 is an abundant number, since it is smaller than the sum of its proper divisors (2395635040).

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

1912000040 is a wasteful number, since it uses less digits than its factorization.

1912000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62621 (or 62617 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1912000040 is about 43726.4226755402. The cubic root of 1912000040 is about 1241.1643676344.

The spelling of 1912000040 in words is "one billion, nine hundred twelve million, forty", and thus it is an aban number.