1851480489 has 8 divisors (see below), whose sum is σ = 2613854880. Its totient is φ = 1161713216.

The previous prime is 1851480457. The next prime is 1851480493. The reversal of 1851480489 is 9840841581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1851480489 - 2⁵ = 1851480457 is a prime.

It is a super-2 number, since 2×1851480489² = 6855960002295358242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1851480409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18151719 + ... + 18151820.

It is an arithmetic number, because the mean of its divisors is an integer number (326731860).

Almost surely, 2^1851480489 is an apocalyptic number.

It is an amenable number.

1851480489 is a deficient number, since it is larger than the sum of its proper divisors (762374391).

1851480489 is a wasteful number, since it uses less digits than its factorization.

1851480489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36303559.

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 1851480489 is about 43028.8332284295. The cubic root of 1851480489 is about 1227.9284073125.

The spelling of 1851480489 in words is "one billion, eight hundred fifty-one million, four hundred eighty thousand, four hundred eighty-nine".