1566318741 has 16 divisors (see below), whose sum is σ = 2321625600. Its totient is φ = 932794560.

The previous prime is 1566318727. The next prime is 1566318799. The reversal of 1566318741 is 1478136651.

It is not a de Polignac number, because 1566318741 - 2¹³ = 1566310549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1566318693 and 1566318702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566308741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646566 + ... + 648983.

It is an arithmetic number, because the mean of its divisors is an integer number (145101600).

Almost surely, 2^1566318741 is an apocalyptic number.

It is an amenable number.

1566318741 is a deficient number, since it is larger than the sum of its proper divisors (755306859).

1566318741 is a wasteful number, since it uses less digits than its factorization.

1566318741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295596.

The product of its digits is 120960, while the sum is 42.

The square root of 1566318741 is about 39576.7449520549. The cubic root of 1566318741 is about 1161.3417740141.

The spelling of 1566318741 in words is "one billion, five hundred sixty-six million, three hundred eighteen thousand, seven hundred forty-one".