1241971815 has 16 divisors (see below), whose sum is σ = 2271034368. Its totient is φ = 567758496.

The previous prime is 1241971763. The next prime is 1241971823. The reversal of 1241971815 is 5181791421.

1241971815 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1241971815 - 2⁸ = 1241971559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5914047 + ... + 5914256.

It is an arithmetic number, because the mean of its divisors is an integer number (141939648).

Almost surely, 2^1241971815 is an apocalyptic number.

1241971815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1241971815 is a deficient number, since it is larger than the sum of its proper divisors (1029062553).

1241971815 is a wasteful number, since it uses less digits than its factorization.

1241971815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828318.

The product of its digits is 20160, while the sum is 39.

The square root of 1241971815 is about 35241.6204933882. The cubic root of 1241971815 is about 1074.9062301479.

The spelling of 1241971815 in words is "one billion, two hundred forty-one million, nine hundred seventy-one thousand, eight hundred fifteen".