1187793955 has 4 divisors (see below), whose sum is σ = 1425352752. Its totient is φ = 950235160.

The previous prime is 1187793947. The next prime is 1187794007. The reversal of 1187793955 is 5593977811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5593977811 = 65647 ⋅85213.

It is not a de Polignac number, because 1187793955 - 2³ = 1187793947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1187793896 and 1187793905.

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 3 ways as a sum of consecutive naturals, for example, 118779391 + ... + 118779400.

It is an arithmetic number, because the mean of its divisors is an integer number (356338188).

Almost surely, 2^1187793955 is an apocalyptic number.

1187793955 is a deficient number, since it is larger than the sum of its proper divisors (237558797).

1187793955 is an equidigital number, since it uses as much as digits as its factorization.

1187793955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237558796.

The product of its digits is 2381400, while the sum is 55.

The square root of 1187793955 is about 34464.3867637305. The cubic root of 1187793955 is about 1059.0432672072.

The spelling of 1187793955 in words is "one billion, one hundred eighty-seven million, seven hundred ninety-three thousand, nine hundred fifty-five".