618737540131 has 4 divisors (see below), whose sum is σ = 624520134072. Its totient is φ = 612954946192.

The previous prime is 618737540107. The next prime is 618737540207. The reversal of 618737540131 is 131045737816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 618737540131 - 2⁹ = 618737539619 is a prime.

It is a super-2 number, since 2×618737540131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618737540231) 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, 2891296810 + ... + 2891297023.

It is an arithmetic number, because the mean of its divisors is an integer number (156130033518).

Almost surely, 2^618737540131 is an apocalyptic number.

618737540131 is a deficient number, since it is larger than the sum of its proper divisors (5782593941).

618737540131 is a wasteful number, since it uses less digits than its factorization.

618737540131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782593940.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 618737540131 in words is "six hundred eighteen billion, seven hundred thirty-seven million, five hundred forty thousand, one hundred thirty-one".