1956214491 has 16 divisors (see below), whose sum is σ = 3251889408. Its totient is φ = 1016215200.

The previous prime is 1956214489. The next prime is 1956214493. The reversal of 1956214491 is 1944126591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1956214489) and next prime (1956214493).

It is not a de Polignac number, because 1956214491 - 2¹ = 1956214489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1956214493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4234000 + ... + 4234461.

It is an arithmetic number, because the mean of its divisors is an integer number (203243088).

Almost surely, 2^1956214491 is an apocalyptic number.

1956214491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1956214491 is a deficient number, since it is larger than the sum of its proper divisors (1295674917).

1956214491 is a wasteful number, since it uses less digits than its factorization.

1956214491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468482.

The product of its digits is 77760, while the sum is 42.

The square root of 1956214491 is about 44229.1136130943. The cubic root of 1956214491 is about 1250.6587441972.

The spelling of 1956214491 in words is "one billion, nine hundred fifty-six million, two hundred fourteen thousand, four hundred ninety-one".