1651601112 has 64 divisors (see below), whose sum is σ = 4924039680. Its totient is φ = 451368192.

The previous prime is 1651601111. The next prime is 1651601123. The reversal of 1651601112 is 2111061561.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651601111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209853 + ... + 217580.

It is an arithmetic number, because the mean of its divisors is an integer number (76938120).

Almost surely, 2^1651601112 is an apocalyptic number.

1651601112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1651601112 is an abundant number, since it is smaller than the sum of its proper divisors (3272438568).

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

1651601112 is a wasteful number, since it uses less digits than its factorization.

1651601112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427472 (or 427468 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1651601112 is about 40639.8955707320. The cubic root of 1651601112 is about 1182.0478449259.

Adding to 1651601112 its reverse (2111061561), we get a palindrome (3762662673).

The spelling of 1651601112 in words is "one billion, six hundred fifty-one million, six hundred one thousand, one hundred twelve".