1919540572 has 12 divisors (see below), whose sum is σ = 3372581016. Its totient is φ = 955946000.

The previous prime is 1919540551. The next prime is 1919540573. The reversal of 1919540572 is 2750459191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919540573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954943 + ... + 956950.

It is an arithmetic number, because the mean of its divisors is an integer number (281048418).

Almost surely, 2^1919540572 is an apocalyptic number.

It is an amenable number.

1919540572 is a deficient number, since it is larger than the sum of its proper divisors (1453040444).

1919540572 is a wasteful number, since it uses less digits than its factorization.

1919540572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912148 (or 1912146 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 1919540572 is about 43812.5618059478. The cubic root of 1919540572 is about 1242.7938590833.

The spelling of 1919540572 in words is "one billion, nine hundred nineteen million, five hundred forty thousand, five hundred seventy-two".