361990357 has 2 divisors, whose sum is σ = 361990358. Its totient is φ = 361990356.

The previous prime is 361990313. The next prime is 361990361. The reversal of 361990357 is 753099163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361988676 + 1681 = 19026^2 + 41^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361990357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361990957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180995178 + 180995179.

It is an arithmetic number, because the mean of its divisors is an integer number (180995179).

Almost surely, 2^361990357 is an apocalyptic number.

It is an amenable number.

361990357 is a deficient number, since it is larger than the sum of its proper divisors (1).

361990357 is an equidigital number, since it uses as much as digits as its factorization.

361990357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 361990357 is about 19026.0441763389. The cubic root of 361990357 is about 712.6872683911.

The spelling of 361990357 in words is "three hundred sixty-one million, nine hundred ninety thousand, three hundred fifty-seven".