1516487949 has 6 divisors (see below), whose sum is σ = 2190482606. Its totient is φ = 1010991960.

The previous prime is 1516487939. The next prime is 1516487953. The reversal of 1516487949 is 9497846151.

1516487949 is a `hidden beast` number, since 1 + 516 + 4 + 87 + 9 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 876752100 + 639735849 = 29610^2 + 25293^2 .

It is not a de Polignac number, because 1516487949 - 2⁴ = 1516487933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1516487895 and 1516487904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516487909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84249322 + ... + 84249339.

Almost surely, 2^1516487949 is an apocalyptic number.

It is an amenable number.

1516487949 is a deficient number, since it is larger than the sum of its proper divisors (673994657).

1516487949 is a wasteful number, since it uses less digits than its factorization.

1516487949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168498667 (or 168498664 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1516487949 is about 38942.1102278754. The cubic root of 1516487949 is about 1148.8931881522.

The spelling of 1516487949 in words is "one billion, five hundred sixteen million, four hundred eighty-seven thousand, nine hundred forty-nine".