1494515641 has 16 divisors (see below), whose sum is σ = 1558338768. Its totient is φ = 1432166400.

The previous prime is 1494515639. The next prime is 1494515669. The reversal of 1494515641 is 1465154941.

It can be written as a sum of positive squares in 8 ways, for example, as 35581225 + 1458934416 = 5965^2 + 38196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1494515641 - 2¹ = 1494515639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1494515594 and 1494515603.

It is not an unprimeable number, because it can be changed into a prime (1494515741) 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, 840145 + ... + 841921.

It is an arithmetic number, because the mean of its divisors is an integer number (97396173).

Almost surely, 2^1494515641 is an apocalyptic number.

It is an amenable number.

1494515641 is a deficient number, since it is larger than the sum of its proper divisors (63823127).

1494515641 is a wasteful number, since it uses less digits than its factorization.

1494515641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its digits is 86400, while the sum is 40.

The square root of 1494515641 is about 38658.9658552838. The cubic root of 1494515641 is about 1143.3174223850.

The spelling of 1494515641 in words is "one billion, four hundred ninety-four million, five hundred fifteen thousand, six hundred forty-one".