20297192194 has 16 divisors (see below), whose sum is σ = 33107981688. Its totient is φ = 9293467392.

The previous prime is 20297192173. The next prime is 20297192219. The reversal of 20297192194 is 49129179202.

It can be written as a sum of positive squares in 4 ways, for example, as 19645666569 + 651525625 = 140163^2 + 25525^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8065989 + ... + 8068504.

Almost surely, 2^20297192194 is an apocalyptic number.

20297192194 is a deficient number, since it is larger than the sum of its proper divisors (12810789494).

20297192194 is a wasteful number, since it uses less digits than its factorization.

20297192194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16134549.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 20297192194 in words is "twenty billion, two hundred ninety-seven million, one hundred ninety-two thousand, one hundred ninety-four".