361990306 has 4 divisors (see below), whose sum is σ = 542985462. Its totient is φ = 180995152.

The previous prime is 361990303. The next prime is 361990313. The reversal of 361990306 is 603099163.

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

It can be written as a sum of positive squares in only one way, i.e., 316306225 + 45684081 = 17785^2 + 6759^2 .

It is not an unprimeable number, because it can be changed into a prime (361990301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90497575 + ... + 90497578.

Almost surely, 2^361990306 is an apocalyptic number.

361990306 is a deficient number, since it is larger than the sum of its proper divisors (180995156).

361990306 is a wasteful number, since it uses less digits than its factorization.

361990306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180995155.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 361990306 is about 19026.0428360708. The cubic root of 361990306 is about 712.6872349215.

The spelling of 361990306 in words is "three hundred sixty-one million, nine hundred ninety thousand, three hundred six".