1804531972 has 6 divisors (see below), whose sum is σ = 3157930958. Its totient is φ = 902265984.

The previous prime is 1804531957. The next prime is 1804531987. The reversal of 1804531972 is 2791354081.

It is an interprime number because it is at equal distance from previous prime (1804531957) and next prime (1804531987).

It can be written as a sum of positive squares in only one way, i.e., 1469495556 + 335036416 = 38334^2 + 18304^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225566493 + ... + 225566500.

Almost surely, 2^1804531972 is an apocalyptic number.

It is an amenable number.

1804531972 is a deficient number, since it is larger than the sum of its proper divisors (1353398986).

1804531972 is a wasteful number, since it uses less digits than its factorization.

1804531972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451132997 (or 451132995 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1804531972 is about 42479.7830973747. The cubic root of 1804531972 is about 1217.4604460753.

The spelling of 1804531972 in words is "one billion, eight hundred four million, five hundred thirty-one thousand, nine hundred seventy-two".