1189625955 has 16 divisors (see below), whose sum is σ = 2175316224. Its totient is φ = 543828960.

The previous prime is 1189625933. The next prime is 1189625971. The reversal of 1189625955 is 5595269811.

It is not a de Polignac number, because 1189625955 - 2⁵ = 1189625923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1189625898 and 1189625907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5664781 + ... + 5664990.

It is an arithmetic number, because the mean of its divisors is an integer number (135957264).

Almost surely, 2^1189625955 is an apocalyptic number.

1189625955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1189625955 is a deficient number, since it is larger than the sum of its proper divisors (985690269).

1189625955 is a wasteful number, since it uses less digits than its factorization.

1189625955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329786.

The product of its digits is 972000, while the sum is 51.

The square root of 1189625955 is about 34490.9546838008. The cubic root of 1189625955 is about 1059.5874610986.

It can be divided in two parts, 11 and 89625955, that added together give a triangular number (89625966 = T₁₃₃₈₈).

The spelling of 1189625955 in words is "one billion, one hundred eighty-nine million, six hundred twenty-five thousand, nine hundred fifty-five".