361864849 has 4 divisors (see below), whose sum is σ = 365184820. Its totient is φ = 358544880.

The previous prime is 361864843. The next prime is 361864859. The reversal of 361864849 is 948468163.

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

It can be written as a sum of positive squares in 2 ways, for example, as 220730449 + 141134400 = 14857^2 + 11880^2 .

It is a cyclic number.

It is not a de Polignac number, because 361864849 - 2⁷ = 361864721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361864843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659822 + ... + 1660039.

It is an arithmetic number, because the mean of its divisors is an integer number (91296205).

Almost surely, 2^361864849 is an apocalyptic number.

It is an amenable number.

361864849 is a deficient number, since it is larger than the sum of its proper divisors (3319971).

361864849 is a wasteful number, since it uses less digits than its factorization.

361864849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319970.

The product of its digits is 995328, while the sum is 49.

The square root of 361864849 is about 19022.7455694492. The cubic root of 361864849 is about 712.6048920776.

The spelling of 361864849 in words is "three hundred sixty-one million, eight hundred sixty-four thousand, eight hundred forty-nine".