1375434761 has 2 divisors, whose sum is σ = 1375434762. Its totient is φ = 1375434760.

The previous prime is 1375434751. The next prime is 1375434769. The reversal of 1375434761 is 1674345731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1131918736 + 243516025 = 33644^2 + 15605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375434761 - 2²² = 1371240457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375434769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687717380 + 687717381.

It is an arithmetic number, because the mean of its divisors is an integer number (687717381).

Almost surely, 2^1375434761 is an apocalyptic number.

It is an amenable number.

1375434761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375434761 is an equidigital number, since it uses as much as digits as its factorization.

1375434761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 1375434761 is about 37086.8542882785. The cubic root of 1375434761 is about 1112.1072329111.

The spelling of 1375434761 in words is "one billion, three hundred seventy-five million, four hundred thirty-four thousand, seven hundred sixty-one".