1851672052 has 12 divisors (see below), whose sum is σ = 3241470820. Its totient is φ = 925537536.

The previous prime is 1851672029. The next prime is 1851672061. The reversal of 1851672052 is 2502761581.

It can be written as a sum of positive squares in 2 ways, for example, as 793210896 + 1058461156 = 28164^2 + 32534^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60363 + ... + 85714.

Almost surely, 2^1851672052 is an apocalyptic number.

It is an amenable number.

1851672052 is a deficient number, since it is larger than the sum of its proper divisors (1389798768).

1851672052 is a wasteful number, since it uses less digits than its factorization.

1851672052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149250 (or 149248 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 1851672052 is about 43031.0591549871. The cubic root of 1851672052 is about 1227.9707549614.

The spelling of 1851672052 in words is "one billion, eight hundred fifty-one million, six hundred seventy-two thousand, fifty-two".