1507649849 has 2 divisors, whose sum is σ = 1507649850. Its totient is φ = 1507649848.

The previous prime is 1507649837. The next prime is 1507649851. The reversal of 1507649849 is 9489467051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1421290000 + 86359849 = 37700^2 + 9293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1507649849 - 2¹² = 1507645753 is a prime.

It is a Sophie Germain prime.

Together with 1507649851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1507649849.

It is not a weakly prime, because it can be changed into another prime (1507642849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 753824924 + 753824925.

It is an arithmetic number, because the mean of its divisors is an integer number (753824925).

Almost surely, 2^1507649849 is an apocalyptic number.

It is an amenable number.

1507649849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1507649849 is an equidigital number, since it uses as much as digits as its factorization.

1507649849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1507649849 is about 38828.4669926589. The cubic root of 1507649849 is about 1146.6569196016.

The spelling of 1507649849 in words is "one billion, five hundred seven million, six hundred forty-nine thousand, eight hundred forty-nine".