2987387649 has 15 divisors (see below), whose sum is σ = 4463375763. Its totient is φ = 1991263824.

The previous prime is 2987387629. The next prime is 2987387653. The reversal of 2987387649 is 9467837892.

The square root of 2987387649 is 54657.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2710764225 + 276623424 = 52065^2 + 16632^2 .

It is not a de Polignac number, because 2987387649 - 2²³ = 2978999041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2987387609) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 488877 + ... + 494949.

Almost surely, 2^2987387649 is an apocalyptic number.

2987387649 is the 54657-th square number.

2987387649 is the 27329-th centered octagonal number.

It is an amenable number.

2987387649 is a deficient number, since it is larger than the sum of its proper divisors (1475988114).

2987387649 is an frugal number, since it uses more digits than its factorization.

2987387649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158 (or 6076 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The cubic root of 2987387649 is about 1440.2256026741.

The spelling of 2987387649 in words is "two billion, nine hundred eighty-seven million, three hundred eighty-seven thousand, six hundred forty-nine".