2162563947 has 8 divisors (see below), whose sum is σ = 3203798480. Its totient is φ = 1441709280.

The previous prime is 2162563943. The next prime is 2162563951. The reversal of 2162563947 is 7493652612.

2162563947 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 5 + 639 + 4 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (2162563943) and next prime (2162563951).

It is not a de Polignac number, because 2162563947 - 2² = 2162563943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2162563943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40047454 + ... + 40047507.

It is an arithmetic number, because the mean of its divisors is an integer number (400474810).

Almost surely, 2^2162563947 is an apocalyptic number.

2162563947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2162563947 is a deficient number, since it is larger than the sum of its proper divisors (1041234533).

2162563947 is an equidigital number, since it uses as much as digits as its factorization.

2162563947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80094970 (or 80094964 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 2162563947 is about 46503.3756516664. The cubic root of 2162563947 is about 1293.1720799609.

The spelling of 2162563947 in words is "two billion, one hundred sixty-two million, five hundred sixty-three thousand, nine hundred forty-seven".