1864378052 has 48 divisors (see below), whose sum is σ = 3447360000. Its totient is φ = 881236224.

The previous prime is 1864378039. The next prime is 1864378067. The reversal of 1864378052 is 2508734681.

It is a junction number, because it is equal to n+sod(n) for n = 1864377994 and 1864378012.

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 15 ways as a sum of consecutive naturals, for example, 775949 + ... + 778347.

It is an arithmetic number, because the mean of its divisors is an integer number (71820000).

Almost surely, 2^1864378052 is an apocalyptic number.

It is an amenable number.

1864378052 is a deficient number, since it is larger than the sum of its proper divisors (1582981948).

1864378052 is a wasteful number, since it uses less digits than its factorization.

1864378052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1864378052 is about 43178.4442980522. Note that the first 3 decimals coincide. The cubic root of 1864378052 is about 1230.7730949642.

The spelling of 1864378052 in words is "one billion, eight hundred sixty-four million, three hundred seventy-eight thousand, fifty-two".