1942265138 has 18 divisors (see below), whose sum is σ = 3203460477. Its totient is φ = 882536160.

The previous prime is 1942265123. The next prime is 1942265179. The reversal of 1942265138 is 8315622491.

It can be written as a sum of positive squares in 2 ways, for example, as 1919578969 + 22686169 = 43813^2 + 4763^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=31163.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1942265095 and 1942265104.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 684170 + ... + 687002.

Almost surely, 2^1942265138 is an apocalyptic number.

1942265138 is a deficient number, since it is larger than the sum of its proper divisors (1261195339).

1942265138 is an frugal number, since it uses more digits than its factorization.

1942265138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690 (or 2846 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 1942265138 is about 44071.1372442328. The cubic root of 1942265138 is about 1247.6789221859.

The spelling of 1942265138 in words is "one billion, nine hundred forty-two million, two hundred sixty-five thousand, one hundred thirty-eight".