1864724540 has 48 divisors (see below), whose sum is σ = 4669926912. Its totient is φ = 611535936.

The previous prime is 1864724539. The next prime is 1864724569. The reversal of 1864724540 is 454274681.

It is a super-2 number, since 2×1864724540² = 6954395220156423200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286334 + ... + 292773.

It is an arithmetic number, because the mean of its divisors is an integer number (97290144).

Almost surely, 2^1864724540 is an apocalyptic number.

1864724540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864724540 is an abundant number, since it is smaller than the sum of its proper divisors (2805202372).

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

1864724540 is a wasteful number, since it uses less digits than its factorization.

1864724540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579146 (or 579144 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 1864724540 is about 43182.4563914560. The cubic root of 1864724540 is about 1230.8493351689.

The spelling of 1864724540 in words is "one billion, eight hundred sixty-four million, seven hundred twenty-four thousand, five hundred forty".