1551621162 has 96 divisors (see below), whose sum is σ = 4021920000. Its totient is φ = 395079552.

The previous prime is 1551621151. The next prime is 1551621223. The reversal of 1551621162 is 2611261551.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103839 + ... + 117837.

It is an arithmetic number, because the mean of its divisors is an integer number (41895000).

Almost surely, 2^1551621162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551621162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010960000).

1551621162 is an abundant number, since it is smaller than the sum of its proper divisors (2470298838).

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

1551621162 is a wasteful number, since it uses less digits than its factorization.

1551621162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14060 (or 14053 counting only the distinct ones).

The product of its digits is 3600, while the sum is 30.

The square root of 1551621162 is about 39390.6227673542. The cubic root of 1551621162 is about 1157.6978623577.

The spelling of 1551621162 in words is "one billion, five hundred fifty-one million, six hundred twenty-one thousand, one hundred sixty-two".