1540001613 has 16 divisors (see below), whose sum is σ = 2102576960. Its totient is φ = 1002081024.

The previous prime is 1540001611. The next prime is 1540001653. The reversal of 1540001613 is 3161000451.

It is not a de Polignac number, because 1540001613 - 2¹ = 1540001611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540001613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540001611) 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, 227445 + ... + 234117.

It is an arithmetic number, because the mean of its divisors is an integer number (131411060).

Almost surely, 2^1540001613 is an apocalyptic number.

It is an amenable number.

1540001613 is a deficient number, since it is larger than the sum of its proper divisors (562575347).

1540001613 is a wasteful number, since it uses less digits than its factorization.

1540001613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1540001613 is about 39242.8542922148. The cubic root of 1540001613 is about 1154.8007534717.

The spelling of 1540001613 in words is "one billion, five hundred forty million, one thousand, six hundred thirteen".