1187478790 has 8 divisors (see below), whose sum is σ = 2137461840. Its totient is φ = 474991512.

The previous prime is 1187478769. The next prime is 1187478793. The reversal of 1187478790 is 978747811.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187478793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59373930 + ... + 59373949.

It is an arithmetic number, because the mean of its divisors is an integer number (267182730).

Almost surely, 2^1187478790 is an apocalyptic number.

1187478790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1187478790 is a deficient number, since it is larger than the sum of its proper divisors (949983050).

1187478790 is a wasteful number, since it uses less digits than its factorization.

1187478790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118747886.

The product of its (nonzero) digits is 790272, while the sum is 52.

The square root of 1187478790 is about 34459.8141318261. The cubic root of 1187478790 is about 1058.9495913372.

The spelling of 1187478790 in words is "one billion, one hundred eighty-seven million, four hundred seventy-eight thousand, seven hundred ninety".