361618403 has 4 divisors (see below), whose sum is σ = 364465920. Its totient is φ = 358770888.

The previous prime is 361618399. The next prime is 361618409. The reversal of 361618403 is 304816163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304816163 = 337 ⋅904499.

It is a cyclic number.

It is not a de Polignac number, because 361618403 - 2² = 361618399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 361618403.

It is not an unprimeable number, because it can be changed into a prime (361618409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423568 + ... + 1423821.

It is an arithmetic number, because the mean of its divisors is an integer number (91116480).

Almost surely, 2^361618403 is an apocalyptic number.

361618403 is a deficient number, since it is larger than the sum of its proper divisors (2847517).

361618403 is a wasteful number, since it uses less digits than its factorization.

361618403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847516.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 361618403 is about 19016.2667997691. The cubic root of 361618403 is about 712.4430835011.

The spelling of 361618403 in words is "three hundred sixty-one million, six hundred eighteen thousand, four hundred three".