1940672520 has 80 divisors (see below), whose sum is σ = 6522826860. Its totient is φ = 517511808.

The previous prime is 1940672497. The next prime is 1940672549. The reversal of 1940672520 is 252760491.

It can be written as a sum of positive squares in 2 ways, for example, as 1799965476 + 140707044 = 42426^2 + 11862^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 296247 + ... + 302726.

Almost surely, 2^1940672520 is an apocalyptic number.

1940672520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940672520 is an abundant number, since it is smaller than the sum of its proper divisors (4582154340).

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

1940672520 is a wasteful number, since it uses less digits than its factorization.

1940672520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598996 (or 598983 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1940672520 is about 44053.0648196014. The cubic root of 1940672520 is about 1247.3378051332.

The spelling of 1940672520 in words is "one billion, nine hundred forty million, six hundred seventy-two thousand, five hundred twenty".