1919336972 has 24 divisors (see below), whose sum is σ = 3839856384. Its totient is φ = 822319632.

The previous prime is 1919336933. The next prime is 1919336981. The reversal of 1919336972 is 2796339191.

It is a super-2 number, since 2×1919336972² = 7367708824172257568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1919336972.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103643 + ... + 120749.

It is an arithmetic number, because the mean of its divisors is an integer number (159994016).

Almost surely, 2^1919336972 is an apocalyptic number.

It is an amenable number.

1919336972 is an abundant number, since it is smaller than the sum of its proper divisors (1920519412).

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

1919336972 is a wasteful number, since it uses less digits than its factorization.

1919336972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21125 (or 21123 counting only the distinct ones).

The product of its digits is 551124, while the sum is 50.

The square root of 1919336972 is about 43810.2382098066. The cubic root of 1919336972 is about 1242.7499177048.

It can be divided in two parts, 19193 and 36972, that added together give a palindrome (56165).

The spelling of 1919336972 in words is "one billion, nine hundred nineteen million, three hundred thirty-six thousand, nine hundred seventy-two".