1191370023 has 6 divisors (see below), whose sum is σ = 1720867824. Its totient is φ = 794246676.

The previous prime is 1191370009. The next prime is 1191370039. The reversal of 1191370023 is 3200731911.

It is not a de Polignac number, because 1191370023 - 2²⁴ = 1174592807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191372023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66187215 + ... + 66187232.

It is an arithmetic number, because the mean of its divisors is an integer number (286811304).

Almost surely, 2^1191370023 is an apocalyptic number.

1191370023 is a deficient number, since it is larger than the sum of its proper divisors (529497801).

1191370023 is a wasteful number, since it uses less digits than its factorization.

1191370023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132374453 (or 132374450 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1191370023 is about 34516.2284005654. The cubic root of 1191370023 is about 1060.1050159988.

The spelling of 1191370023 in words is "one billion, one hundred ninety-one million, three hundred seventy thousand, twenty-three".