3120072649 has 2 divisors, whose sum is σ = 3120072650. Its totient is φ = 3120072648.

The previous prime is 3120072623. The next prime is 3120072731. The reversal of 3120072649 is 9462700213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2804761600 + 315311049 = 52960^2 + 17757^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120072649 - 2²⁵ = 3086518217 is a prime.

It is not a weakly prime, because it can be changed into another prime (3120072149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560036324 + 1560036325.

It is an arithmetic number, because the mean of its divisors is an integer number (1560036325).

Almost surely, 2^3120072649 is an apocalyptic number.

It is an amenable number.

3120072649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120072649 is an equidigital number, since it uses as much as digits as its factorization.

3120072649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 3120072649 is about 55857.6104841587. The cubic root of 3120072649 is about 1461.2400562635.

The spelling of 3120072649 in words is "three billion, one hundred twenty million, seventy-two thousand, six hundred forty-nine".