1601019612 has 36 divisors (see below), whose sum is σ = 4104028656. Its totient is φ = 526155840.

The previous prime is 1601019593. The next prime is 1601019613. The reversal of 1601019612 is 2169101061.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601019613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310633 + ... + 315744.

It is an arithmetic number, because the mean of its divisors is an integer number (114000796).

Almost surely, 2^1601019612 is an apocalyptic number.

1601019612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601019612 is an abundant number, since it is smaller than the sum of its proper divisors (2503009044).

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

1601019612 is a wasteful number, since it uses less digits than its factorization.

1601019612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626458 (or 626453 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1601019612 is about 40012.7431201611. The cubic root of 1601019612 is about 1169.8554894934.

The spelling of 1601019612 in words is "one billion, six hundred one million, nineteen thousand, six hundred twelve".