1515201641 has 8 divisors (see below), whose sum is σ = 1534313664. Its totient is φ = 1496181520.

The previous prime is 1515201587. The next prime is 1515201661. The reversal of 1515201641 is 1461025151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1515201641 - 2¹⁴ = 1515185257 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 1515201641.

It is not an unprimeable number, because it can be changed into a prime (1515201661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10511 + ... + 56043.

It is an arithmetic number, because the mean of its divisors is an integer number (191789208).

Almost surely, 2^1515201641 is an apocalyptic number.

It is an amenable number.

1515201641 is a deficient number, since it is larger than the sum of its proper divisors (19112023).

1515201641 is a wasteful number, since it uses less digits than its factorization.

1515201641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45951.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1515201641 is about 38925.5910809329. The cubic root of 1515201641 is about 1148.5682600760.

Adding to 1515201641 its reverse (1461025151), we get a palindrome (2976226792).

The spelling of 1515201641 in words is "one billion, five hundred fifteen million, two hundred one thousand, six hundred forty-one".