618761943 has 16 divisors (see below), whose sum is σ = 929244640. Its totient is φ = 406855872.

The previous prime is 618761879. The next prime is 618761987. The reversal of 618761943 is 349167816.

It is a happy number.

It is not a de Polignac number, because 618761943 - 2⁶ = 618761879 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 (618761243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154996 + ... + 158937.

It is an arithmetic number, because the mean of its divisors is an integer number (58077790).

Almost surely, 2^618761943 is an apocalyptic number.

618761943 is a deficient number, since it is larger than the sum of its proper divisors (310482697).

618761943 is a wasteful number, since it uses less digits than its factorization.

618761943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314015 (or 314009 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 618761943 is about 24874.9259898396. The cubic root of 618761943 is about 852.1339429370.

The spelling of 618761943 in words is "six hundred eighteen million, seven hundred sixty-one thousand, nine hundred forty-three".