2487661951 has 2 divisors, whose sum is σ = 2487661952. Its totient is φ = 2487661950.

The previous prime is 2487661859. The next prime is 2487661993. The reversal of 2487661951 is 1591667842.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2487661951 - 2⁷ = 2487661823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2487661895 and 2487661904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2487661651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243830975 + 1243830976.

It is an arithmetic number, because the mean of its divisors is an integer number (1243830976).

Almost surely, 2^2487661951 is an apocalyptic number.

2487661951 is a deficient number, since it is larger than the sum of its proper divisors (1).

2487661951 is an equidigital number, since it uses as much as digits as its factorization.

2487661951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 2487661951 is about 49876.4669057462. The cubic root of 2487661951 is about 1354.9724173885.

The spelling of 2487661951 in words is "two billion, four hundred eighty-seven million, six hundred sixty-one thousand, nine hundred fifty-one".