1187792051 has 4 divisors (see below), whose sum is σ = 1187991552. Its totient is φ = 1187592552.

The previous prime is 1187792041. The next prime is 1187792077. The reversal of 1187792051 is 1502977811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1502977811 = 2467 ⋅609233.

It is a cyclic number.

It is not a de Polignac number, because 1187792051 - 2⁶ = 1187791987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187792041) 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, 90536 + ... + 102821.

It is an arithmetic number, because the mean of its divisors is an integer number (296997888).

Almost surely, 2^1187792051 is an apocalyptic number.

1187792051 is a deficient number, since it is larger than the sum of its proper divisors (199501).

1187792051 is an equidigital number, since it uses as much as digits as its factorization.

1187792051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199500.

The product of its (nonzero) digits is 35280, while the sum is 41.

The square root of 1187792051 is about 34464.3591410025. The cubic root of 1187792051 is about 1059.0427013348.

The spelling of 1187792051 in words is "one billion, one hundred eighty-seven million, seven hundred ninety-two thousand, fifty-one".