1173497013 has 18 divisors (see below), whose sum is σ = 1826016374. Its totient is φ = 721923984.

The previous prime is 1173497011. The next prime is 1173497041. The reversal of 1173497013 is 3107943711.

It can be written as a sum of positive squares in only one way, i.e., 812421009 + 361076004 = 28503^2 + 19002^2 .

It is not a de Polignac number, because 1173497013 - 2¹ = 1173497011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173497011) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 368956 + ... + 372122.

Almost surely, 2^1173497013 is an apocalyptic number.

1173497013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1173497013 is a deficient number, since it is larger than the sum of its proper divisors (652519361).

1173497013 is an frugal number, since it uses more digits than its factorization.

1173497013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6353 (or 3183 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 1173497013 is about 34256.3426681834. The cubic root of 1173497013 is about 1054.7770282664. Note that the first 3 decimals are identical.

The spelling of 1173497013 in words is "one billion, one hundred seventy-three million, four hundred ninety-seven thousand, thirteen".