1751618961 has 12 divisors (see below), whose sum is σ = 2598498292. Its totient is φ = 1136185056.

The previous prime is 1751618959. The next prime is 1751619007. The reversal of 1751618961 is 1698161571.

It can be written as a sum of positive squares in 2 ways, for example, as 1494209025 + 257409936 = 38655^2 + 16044^2 .

It is not a de Polignac number, because 1751618961 - 2¹ = 1751618959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1751618951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2629726 + ... + 2630391.

Almost surely, 2^1751618961 is an apocalyptic number.

It is an amenable number.

1751618961 is a deficient number, since it is larger than the sum of its proper divisors (846879331).

1751618961 is a wasteful number, since it uses less digits than its factorization.

1751618961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260160 (or 5260157 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 1751618961 is about 41852.3471384820. The cubic root of 1751618961 is about 1205.4426295826.

The spelling of 1751618961 in words is "one billion, seven hundred fifty-one million, six hundred eighteen thousand, nine hundred sixty-one".