19948290994 has 32 divisors (see below), whose sum is σ = 31813050672. Its totient is φ = 9348864000.

The previous prime is 19948290991. The next prime is 19948291019. The reversal of 19948290994 is 49909284991.

It can be written as a sum of positive squares in 8 ways, for example, as 6349699225 + 13598591769 = 79685^2 + 116613^2 .

It is not an unprimeable number, because it can be changed into a prime (19948290991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13468734 + ... + 13470214.

Almost surely, 2^19948290994 is an apocalyptic number.

19948290994 is a deficient number, since it is larger than the sum of its proper divisors (11864759678).

19948290994 is a wasteful number, since it uses less digits than its factorization.

19948290994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862.

The product of its (nonzero) digits is 15116544, while the sum is 64.

The spelling of 19948290994 in words is "nineteen billion, nine hundred forty-eight million, two hundred ninety thousand, nine hundred ninety-four".