1919291018192 has 10 divisors (see below), whose sum is σ = 3718626347778. Its totient is φ = 959645509088.

The previous prime is 1919291018191. The next prime is 1919291018201. The reversal of 1919291018192 is 2918101929191.

It can be written as a sum of positive squares in only one way, i.e., 1771976296336 + 147314721856 = 1331156^2 + 383816^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919291018191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59977844303 + ... + 59977844334.

Almost surely, 2^{1919291018192} is an apocalyptic number.

It is an amenable number.

1919291018192 is a deficient number, since it is larger than the sum of its proper divisors (1799335329586).

1919291018192 is a wasteful number, since it uses less digits than its factorization.

1919291018192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119955688645 (or 119955688639 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 53.

It can be divided in two parts, 191929 and 1018192, that added together give a palindrome (1210121).

The spelling of 1919291018192 in words is "one trillion, nine hundred nineteen billion, two hundred ninety-one million, eighteen thousand, one hundred ninety-two".