1251841379 has 2 divisors, whose sum is σ = 1251841380. Its totient is φ = 1251841378.

The previous prime is 1251841373. The next prime is 1251841439. The reversal of 1251841379 is 9731481521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251841379 - 2¹⁶ = 1251775843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251841373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625920689 + 625920690.

It is an arithmetic number, because the mean of its divisors is an integer number (625920690).

Almost surely, 2^1251841379 is an apocalyptic number.

1251841379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251841379 is an equidigital number, since it uses as much as digits as its factorization.

1251841379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 1251841379 is about 35381.3705076556. The cubic root of 1251841379 is about 1077.7460362680.

The spelling of 1251841379 in words is "one billion, two hundred fifty-one million, eight hundred forty-one thousand, three hundred seventy-nine".