1793987461 has 12 divisors (see below), whose sum is σ = 2095853292. Its totient is φ = 1531094208.

The previous prime is 1793987449. The next prime is 1793987471. The reversal of 1793987461 is 1647893971.

It can be written as a sum of positive squares in 2 ways, for example, as 240839361 + 1553148100 = 15519^2 + 39410^2 .

It is not a de Polignac number, because 1793987461 - 2⁷ = 1793987333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1793987401) 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, 67150 + ... + 89983.

It is an arithmetic number, because the mean of its divisors is an integer number (174654441).

Almost surely, 2^1793987461 is an apocalyptic number.

It is an amenable number.

1793987461 is a deficient number, since it is larger than the sum of its proper divisors (301865831).

1793987461 is a wasteful number, since it uses less digits than its factorization.

1793987461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157380 (or 157373 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 55.

The square root of 1793987461 is about 42355.4891483973. The cubic root of 1793987461 is about 1215.0844631850.

The spelling of 1793987461 in words is "one billion, seven hundred ninety-three million, nine hundred eighty-seven thousand, four hundred sixty-one".