361243853 has 4 divisors (see below), whose sum is σ = 365816640. Its totient is φ = 356671068.

The previous prime is 361243847. The next prime is 361243859. The reversal of 361243853 is 358342163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358342163 = 269 ⋅1332127.

It is an interprime number because it is at equal distance from previous prime (361243847) and next prime (361243859).

It is a cyclic number.

It is not a de Polignac number, because 361243853 - 2¹⁶ = 361178317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361243859) 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, 2286275 + ... + 2286432.

It is an arithmetic number, because the mean of its divisors is an integer number (91454160).

Almost surely, 2^361243853 is an apocalyptic number.

It is an amenable number.

361243853 is a deficient number, since it is larger than the sum of its proper divisors (4572787).

361243853 is an equidigital number, since it uses as much as digits as its factorization.

361243853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572786.

The product of its digits is 51840, while the sum is 35.

The square root of 361243853 is about 19006.4161008855. The cubic root of 361243853 is about 712.1970250989.

The spelling of 361243853 in words is "three hundred sixty-one million, two hundred forty-three thousand, eight hundred fifty-three".