1615450049 has 2 divisors, whose sum is σ = 1615450050. Its totient is φ = 1615450048.

The previous prime is 1615450037. The next prime is 1615450063. The reversal of 1615450049 is 9400545161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1539149824 + 76300225 = 39232^2 + 8735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1615450049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1615450349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807725024 + 807725025.

It is an arithmetic number, because the mean of its divisors is an integer number (807725025).

Almost surely, 2^1615450049 is an apocalyptic number.

It is an amenable number.

1615450049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1615450049 is an equidigital number, since it uses as much as digits as its factorization.

1615450049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1615450049 is about 40192.6616311983. The cubic root of 1615450049 is about 1173.3597270359.

The spelling of 1615450049 in words is "one billion, six hundred fifteen million, four hundred fifty thousand, forty-nine".