361196989 has 2 divisors, whose sum is σ = 361196990. Its totient is φ = 361196988.

The previous prime is 361196981. The next prime is 361197029. The reversal of 361196989 is 989691163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326091364 + 35105625 = 18058^2 + 5925^2 .

It is an emirp because it is prime and its reverse (989691163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 361196989 - 2³ = 361196981 is a prime.

It is a super-2 number, since 2×361196989² = 260926529725332242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361196981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180598494 + 180598495.

It is an arithmetic number, because the mean of its divisors is an integer number (180598495).

Almost surely, 2^361196989 is an apocalyptic number.

It is an amenable number.

361196989 is a deficient number, since it is larger than the sum of its proper divisors (1).

361196989 is an equidigital number, since it uses as much as digits as its factorization.

361196989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 361196989 is about 19005.1832140603. The cubic root of 361196989 is about 712.1662261021.

The spelling of 361196989 in words is "three hundred sixty-one million, one hundred ninety-six thousand, nine hundred eighty-nine".