1187230957 has 16 divisors (see below), whose sum is σ = 1310414400. Its totient is φ = 1066665600.

The previous prime is 1187230939. The next prime is 1187230969. The reversal of 1187230957 is 7590327811.

It is not a de Polignac number, because 1187230957 - 2¹⁵ = 1187198189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187230987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344113 + ... + 347545.

It is an arithmetic number, because the mean of its divisors is an integer number (81900900).

Almost surely, 2^1187230957 is an apocalyptic number.

It is an amenable number.

1187230957 is a deficient number, since it is larger than the sum of its proper divisors (123183443).

1187230957 is a wasteful number, since it uses less digits than its factorization.

1187230957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 1187230957 is about 34456.2179729581. The cubic root of 1187230957 is about 1058.8759167823.

The spelling of 1187230957 in words is "one billion, one hundred eighty-seven million, two hundred thirty thousand, nine hundred fifty-seven".