29742162691 has 4 divisors (see below), whose sum is σ = 29743895952. Its totient is φ = 29740429432.

The previous prime is 29742162689. The next prime is 29742162701. The reversal of 29742162691 is 19626124792.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29742162691 - 2¹ = 29742162689 is a prime.

It is a super-2 number, since 2×29742162691² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29742160691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840631 + ... + 875296.

It is an arithmetic number, because the mean of its divisors is an integer number (7435973988).

Almost surely, 2^29742162691 is an apocalyptic number.

29742162691 is a deficient number, since it is larger than the sum of its proper divisors (1733261).

29742162691 is a wasteful number, since it uses less digits than its factorization.

29742162691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733260.

The product of its digits is 653184, while the sum is 49.

The spelling of 29742162691 in words is "twenty-nine billion, seven hundred forty-two million, one hundred sixty-two thousand, six hundred ninety-one".