361776749 has 2 divisors, whose sum is σ = 361776750. Its totient is φ = 361776748.

The previous prime is 361776703. The next prime is 361776757. The reversal of 361776749 is 947677163.

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., 249798025 + 111978724 = 15805^2 + 10582^2 .

It is a cyclic number.

It is not a de Polignac number, because 361776749 - 2¹⁶ = 361711213 is a prime.

It is a super-2 number, since 2×361776749² = 261764832234018002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 361776697 and 361776706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361776799) 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 as a sum of consecutive naturals, namely, 180888374 + 180888375.

It is an arithmetic number, because the mean of its divisors is an integer number (180888375).

Almost surely, 2^361776749 is an apocalyptic number.

It is an amenable number.

361776749 is a deficient number, since it is larger than the sum of its proper divisors (1).

361776749 is an equidigital number, since it uses as much as digits as its factorization.

361776749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 361776749 is about 19020.4297795817. The cubic root of 361776749 is about 712.5470568695.

The spelling of 361776749 in words is "three hundred sixty-one million, seven hundred seventy-six thousand, seven hundred forty-nine".