1172133513 has 12 divisors (see below), whose sum is σ = 1751464260. Its totient is φ = 754476576.

The previous prime is 1172133499. The next prime is 1172133539. The reversal of 1172133513 is 3153312711.

It is a happy number.

1172133513 is a `hidden beast` number, since 1 + 17 + 2 + 133 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 696326544 + 475806969 = 26388^2 + 21813^2 .

It is not a de Polignac number, because 1172133513 - 2⁵ = 1172133481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1172133593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2245206 + ... + 2245727.

It is an arithmetic number, because the mean of its divisors is an integer number (145955355).

Almost surely, 2^1172133513 is an apocalyptic number.

It is an amenable number.

1172133513 is a deficient number, since it is larger than the sum of its proper divisors (579330747).

1172133513 is a wasteful number, since it uses less digits than its factorization.

1172133513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490968 (or 4490965 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 1172133513 is about 34236.4354599015. The cubic root of 1172133513 is about 1054.3683506592.

The spelling of 1172133513 in words is "one billion, one hundred seventy-two million, one hundred thirty-three thousand, five hundred thirteen".