2147778162 has 24 divisors (see below), whose sum is σ = 4659205824. Its totient is φ = 715051224.

The previous prime is 2147778131. The next prime is 2147778163. The reversal of 2147778162 is 2618777412.

It is a super-2 number, since 2×2147778162² = 9225902066328196488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147778163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57678 + ... + 87305.

It is an arithmetic number, because the mean of its divisors is an integer number (194133576).

Almost surely, 2^2147778162 is an apocalyptic number.

2147778162 is an abundant number, since it is smaller than the sum of its proper divisors (2511427662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2147778162 is a wasteful number, since it uses less digits than its factorization.

2147778162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145814 (or 145811 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 2147778162 is about 46344.1275891563. The cubic root of 2147778162 is about 1290.2181314925.

The spelling of 2147778162 in words is "two billion, one hundred forty-seven million, seven hundred seventy-eight thousand, one hundred sixty-two".