2162342640 has 160 divisors (see below), whose sum is σ = 6872702976. Its totient is φ = 562222080.

The previous prime is 2162342627. The next prime is 2162342653. The reversal of 2162342640 is 462432612.

It is an interprime number because it is at equal distance from previous prime (2162342627) and next prime (2162342653).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2162342598 and 2162342607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1858699 + ... + 1859861.

Almost surely, 2^2162342640 is an apocalyptic number.

2162342640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2162342640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3436351488).

2162342640 is an abundant number, since it is smaller than the sum of its proper divisors (4710360336).

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

2162342640 is a wasteful number, since it uses less digits than its factorization.

2162342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2162342640 is about 46500.9961183629. The cubic root of 2162342640 is about 1293.1279659982.

The spelling of 2162342640 in words is "two billion, one hundred sixty-two million, three hundred forty-two thousand, six hundred forty".