1942153739 has 2 divisors, whose sum is σ = 1942153740. Its totient is φ = 1942153738.

The previous prime is 1942153679. The next prime is 1942153757. The reversal of 1942153739 is 9373512491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942153739 is a prime.

It is a super-2 number, since 2×1942153739² = 7543922291823360242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1942153739.

It is not a weakly prime, because it can be changed into another prime (1942155739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971076869 + 971076870.

It is an arithmetic number, because the mean of its divisors is an integer number (971076870).

Almost surely, 2^1942153739 is an apocalyptic number.

1942153739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942153739 is an equidigital number, since it uses as much as digits as its factorization.

1942153739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 1942153739 is about 44069.8733717264. The cubic root of 1942153739 is about 1247.6550681063.

The spelling of 1942153739 in words is "one billion, nine hundred forty-two million, one hundred fifty-three thousand, seven hundred thirty-nine".