1651020612 has 24 divisors (see below), whose sum is σ = 3853213056. Its totient is φ = 550221408.

The previous prime is 1651020611. The next prime is 1651020619. The reversal of 1651020612 is 2160201561.

It is a super-2 number, since 2×1651020612² = 5451738122497709088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1651020611) 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, 56938 + ... + 80894.

It is an arithmetic number, because the mean of its divisors is an integer number (160550544).

Almost surely, 2^1651020612 is an apocalyptic number.

1651020612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1651020612 is an abundant number, since it is smaller than the sum of its proper divisors (2202192444).

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

1651020612 is a wasteful number, since it uses less digits than its factorization.

1651020612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29707 (or 29705 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1651020612 is about 40632.7529463609. The cubic root of 1651020612 is about 1181.9093411074.

The spelling of 1651020612 in words is "one billion, six hundred fifty-one million, twenty thousand, six hundred twelve".