361719940 has 12 divisors (see below), whose sum is σ = 759611916. Its totient is φ = 144687968.

The previous prime is 361719923. The next prime is 361719947. The reversal of 361719940 is 49917163.

It can be written as a sum of positive squares in 2 ways, for example, as 94789696 + 266930244 = 9736^2 + 16338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 361719893 and 361719902.

It is not an unprimeable number, because it can be changed into a prime (361719947) 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 in 3 ways as a sum of consecutive naturals, for example, 9042979 + ... + 9043018.

It is an arithmetic number, because the mean of its divisors is an integer number (63300993).

Almost surely, 2^361719940 is an apocalyptic number.

It is an amenable number.

361719940 is an abundant number, since it is smaller than the sum of its proper divisors (397891976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

361719940 is a wasteful number, since it uses less digits than its factorization.

361719940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18086006 (or 18086004 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 361719940 is about 19018.9363530141. The cubic root of 361719940 is about 712.5097583561.

The spelling of 361719940 in words is "three hundred sixty-one million, seven hundred nineteen thousand, nine hundred forty".