1942786738 has 4 divisors (see below), whose sum is σ = 2914180110. Its totient is φ = 971393368.

The previous prime is 1942786717. The next prime is 1942786759. The reversal of 1942786738 is 8376872491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8376872491 = 13 ⋅644374807.

It is an interprime number because it is at equal distance from previous prime (1942786717) and next prime (1942786759).

It can be written as a sum of positive squares in only one way, i.e., 1941547969 + 1238769 = 44063^2 + 1113^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485696683 + ... + 485696686.

Almost surely, 2^1942786738 is an apocalyptic number.

1942786738 is a deficient number, since it is larger than the sum of its proper divisors (971393372).

1942786738 is an equidigital number, since it uses as much as digits as its factorization.

1942786738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971393371.

The product of its digits is 4064256, while the sum is 55.

The square root of 1942786738 is about 44077.0545522271. The cubic root of 1942786738 is about 1247.7906012532.

The spelling of 1942786738 in words is "one billion, nine hundred forty-two million, seven hundred eighty-six thousand, seven hundred thirty-eight".