1616570149 has 2 divisors, whose sum is σ = 1616570150. Its totient is φ = 1616570148.

The previous prime is 1616570143. The next prime is 1616570177. The reversal of 1616570149 is 9410756161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1588022500 + 28547649 = 39850^2 + 5343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616570149 - 2⁵ = 1616570117 is a prime.

It is a super-2 number, since 2×1616570149² = 5226598093275764402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616570143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808285074 + 808285075.

It is an arithmetic number, because the mean of its divisors is an integer number (808285075).

Almost surely, 2^1616570149 is an apocalyptic number.

It is an amenable number.

1616570149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616570149 is an equidigital number, since it uses as much as digits as its factorization.

1616570149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1616570149 is about 40206.5933523346. The cubic root of 1616570149 is about 1173.6308540795.

The spelling of 1616570149 in words is "one billion, six hundred sixteen million, five hundred seventy thousand, one hundred forty-nine".