1186990425 has 72 divisors (see below), whose sum is σ = 2190127680. Its totient is φ = 614275200.

The previous prime is 1186990411. The next prime is 1186990429. The reversal of 1186990425 is 5240996811.

It is not a de Polignac number, because 1186990425 - 2⁸ = 1186990169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1186990429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1069771 + ... + 1070879.

It is an arithmetic number, because the mean of its divisors is an integer number (30418440).

Almost surely, 2^1186990425 is an apocalyptic number.

1186990425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1186990425 is a deficient number, since it is larger than the sum of its proper divisors (1003137255).

1186990425 is a wasteful number, since it uses less digits than its factorization.

1186990425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1186990425 is about 34452.7273956649. The cubic root of 1186990425 is about 1058.8044028272.

The spelling of 1186990425 in words is "one billion, one hundred eighty-six million, nine hundred ninety thousand, four hundred twenty-five".