1187426480 has 40 divisors (see below), whose sum is σ = 2849829504. Its totient is φ = 459648000.

The previous prime is 1187426479. The next prime is 1187426509. The reversal of 1187426480 is 846247811.

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

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 7 ways as a sum of consecutive naturals, for example, 236921 + ... + 241880.

Almost surely, 2^1187426480 is an apocalyptic number.

1187426480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1187426480 is an abundant number, since it is smaller than the sum of its proper divisors (1662403024).

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

1187426480 is a wasteful number, since it uses less digits than its factorization.

1187426480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478845 (or 478839 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1187426480 is about 34459.0551234360. The cubic root of 1187426480 is about 1058.9340417355.

The spelling of 1187426480 in words is "one billion, one hundred eighty-seven million, four hundred twenty-six thousand, four hundred eighty".