19790412416 has 16 divisors (see below), whose sum is σ = 39426212490. Its totient is φ = 9895206144.

The previous prime is 19790412403. The next prime is 19790412427. The reversal of 19790412416 is 61421409791.

It can be written as a sum of positive squares in only one way, i.e., 19768360000 + 22052416 = 140600^2 + 4696^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77306171 + ... + 77306426.

Almost surely, 2^19790412416 is an apocalyptic number.

19790412416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19790412416 is a deficient number, since it is larger than the sum of its proper divisors (19635800074).

19790412416 is an equidigital number, since it uses as much as digits as its factorization.

19790412416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154612611 (or 154612599 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 19790412416 in words is "nineteen billion, seven hundred ninety million, four hundred twelve thousand, four hundred sixteen".