1851530480 has 40 divisors (see below), whose sum is σ = 4409811504. Its totient is φ = 722547200.

The previous prime is 1851530479. The next prime is 1851530501. The reversal of 1851530480 is 840351581.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1851530480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278966 + ... + 285525.

Almost surely, 2^1851530480 is an apocalyptic number.

1851530480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1851530480 is an abundant number, since it is smaller than the sum of its proper divisors (2558281024).

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

1851530480 is a wasteful number, since it uses less digits than its factorization.

1851530480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564545 (or 564539 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1851530480 is about 43029.4141256885. The cubic root of 1851530480 is about 1227.9394587956.

The spelling of 1851530480 in words is "one billion, eight hundred fifty-one million, five hundred thirty thousand, four hundred eighty".