361993545 has 24 divisors (see below), whose sum is σ = 628113096. Its totient is φ = 192860928.

The previous prime is 361993543. The next prime is 361993553. The reversal of 361993545 is 545399163.

361993545 is a `hidden beast` number, since 3 + 6 + 19 + 93 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7160976 + 354832569 = 2676^2 + 18837^2 .

It is not a de Polignac number, because 361993545 - 2¹ = 361993543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 361993545.

It is not an unprimeable number, because it can be changed into a prime (361993543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45699 + ... + 53031.

It is an arithmetic number, because the mean of its divisors is an integer number (26171379).

Almost surely, 2^361993545 is an apocalyptic number.

It is an amenable number.

361993545 is a deficient number, since it is larger than the sum of its proper divisors (266119551).

361993545 is a wasteful number, since it uses less digits than its factorization.

361993545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441 (or 8438 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 361993545 is about 19026.1279560503. The cubic root of 361993545 is about 712.6893605650.

The spelling of 361993545 in words is "three hundred sixty-one million, nine hundred ninety-three thousand, five hundred forty-five".