361072749 has 4 divisors (see below), whose sum is σ = 481430336. Its totient is φ = 240715164.

The previous prime is 361072727. The next prime is 361072759. The reversal of 361072749 is 947270163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-361072749 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361072759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60178789 + ... + 60178794.

It is an arithmetic number, because the mean of its divisors is an integer number (120357584).

Almost surely, 2^361072749 is an apocalyptic number.

It is an amenable number.

361072749 is a deficient number, since it is larger than the sum of its proper divisors (120357587).

361072749 is a wasteful number, since it uses less digits than its factorization.

361072749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120357586.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 361072749 is about 19001.9143509279. The cubic root of 361072749 is about 712.0845627427.

The spelling of 361072749 in words is "three hundred sixty-one million, seventy-two thousand, seven hundred forty-nine".