1942117213 has 8 divisors (see below), whose sum is σ = 2095159608. Its totient is φ = 1793385984.

The previous prime is 1942117181. The next prime is 1942117237. The reversal of 1942117213 is 3127112491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 760270329 + 1181846884 = 27573^2 + 34378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1942117213 - 2⁵ = 1942117181 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 (1942117253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076856 + ... + 1078657.

It is an arithmetic number, because the mean of its divisors is an integer number (261894951).

Almost surely, 2^1942117213 is an apocalyptic number.

It is an amenable number.

1942117213 is a deficient number, since it is larger than the sum of its proper divisors (153042395).

1942117213 is a wasteful number, since it uses less digits than its factorization.

1942117213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155583.

The product of its digits is 3024, while the sum is 31.

The square root of 1942117213 is about 44069.4589596923. The cubic root of 1942117213 is about 1247.6472465259.

The spelling of 1942117213 in words is "one billion, nine hundred forty-two million, one hundred seventeen thousand, two hundred thirteen".