1900392492 has 12 divisors (see below), whose sum is σ = 4434249176. Its totient is φ = 633464160.

The previous prime is 1900392491. The next prime is 1900392497. The reversal of 1900392492 is 2942930091.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1900392492² = 7222983247299940128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1900392492.

It is not an unprimeable number, because it can be changed into a prime (1900392491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79183009 + ... + 79183032.

Almost surely, 2^1900392492 is an apocalyptic number.

1900392492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1900392492 is an abundant number, since it is smaller than the sum of its proper divisors (2533856684).

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

1900392492 is a wasteful number, since it uses less digits than its factorization.

1900392492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158366048 (or 158366046 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 1900392492 is about 43593.4913949319. The cubic root of 1900392492 is about 1238.6476089874.

The spelling of 1900392492 in words is "one billion, nine hundred million, three hundred ninety-two thousand, four hundred ninety-two".