40136613 has 16 divisors (see below), whose sum is σ = 58738176. Its totient is φ = 24176240.

The previous prime is 40136573. The next prime is 40136617. The reversal of 40136613 is 31663104.

It is not a de Polignac number, because 40136613 - 2⁹ = 40136101 is a prime.

It is a super-2 number, since 2×40136613² = 3221895406223538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870 + ... + 9152.

It is an arithmetic number, because the mean of its divisors is an integer number (3671136).

Almost surely, 2^40136613 is an apocalyptic number.

It is an amenable number.

40136613 is a deficient number, since it is larger than the sum of its proper divisors (18601563).

40136613 is a wasteful number, since it uses less digits than its factorization.

40136613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 40136613 is about 6335.3463204469. The cubic root of 40136613 is about 342.3840885051.

Adding to 40136613 its reverse (31663104), we get a palindrome (71799717).

The spelling of 40136613 in words is "forty million, one hundred thirty-six thousand, six hundred thirteen".