4061491812 has 72 divisors (see below), whose sum is σ = 11972688000. Its totient is φ = 1160422704.

The previous prime is 4061491787. The next prime is 4061491849. The reversal of 4061491812 is 2181941604.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152112 + ... + 176807.

Almost surely, 2^4061491812 is an apocalyptic number.

4061491812 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4061491812 is an abundant number, since it is smaller than the sum of its proper divisors (7911196188).

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

4061491812 is a wasteful number, since it uses less digits than its factorization.

4061491812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328950 (or 328931 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 4061491812 is about 63729.8345518016. The cubic root of 4061491812 is about 1595.4940686304.

The spelling of 4061491812 in words is "four billion, sixty-one million, four hundred ninety-one thousand, eight hundred twelve".