1172994001 has 9 divisors (see below), whose sum is σ = 1215866353. Its totient is φ = 1131586960.

The previous prime is 1172993963. The next prime is 1172994019. The reversal of 1172994001 is 1004992711.

The square root of 1172994001 is 34249.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 287336401 + 885657600 = 16951^2 + 29760^2 .

It is not a de Polignac number, because 1172994001 - 2⁷ = 1172993873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172994041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 992631 + ... + 993811.

Almost surely, 2^1172994001 is an apocalyptic number.

1172994001 is the 34249-th square number.

1172994001 is the 17125-th centered octagonal number.

It is an amenable number.

1172994001 is a deficient number, since it is larger than the sum of its proper divisors (42872352).

1172994001 is an frugal number, since it uses more digits than its factorization.

1172994001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The cubic root of 1172994001 is about 1054.6262989157.

The spelling of 1172994001 in words is "one billion, one hundred seventy-two million, nine hundred ninety-four thousand, one".