1172081351 has 4 divisors (see below), whose sum is σ = 1339521552. Its totient is φ = 1004641152.

The previous prime is 1172081341. The next prime is 1172081353. The reversal of 1172081351 is 1531802711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1531802711 = 9613 ⋅159347.

It is a cyclic number.

It is not a de Polignac number, because 1172081351 - 2²⁶ = 1104972487 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 (1172081353) 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, 83720090 + ... + 83720103.

It is an arithmetic number, because the mean of its divisors is an integer number (334880388).

Almost surely, 2^1172081351 is an apocalyptic number.

1172081351 is a deficient number, since it is larger than the sum of its proper divisors (167440201).

1172081351 is an equidigital number, since it uses as much as digits as its factorization.

1172081351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167440200.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1172081351 is about 34235.6736606716. The cubic root of 1172081351 is about 1054.3527100127.

The spelling of 1172081351 in words is "one billion, one hundred seventy-two million, eighty-one thousand, three hundred fifty-one".