19071012 has 12 divisors (see below), whose sum is σ = 44499056. Its totient is φ = 6357000.

The previous prime is 19071011. The next prime is 19071029. The reversal of 19071012 is 21017091.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 19071012.

It is not an unprimeable number, because it can be changed into a prime (19071011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794614 + ... + 794637.

Almost surely, 2^19071012 is an apocalyptic number.

19071012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19071012 is an abundant number, since it is smaller than the sum of its proper divisors (25428044).

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

19071012 is a wasteful number, since it uses less digits than its factorization.

19071012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589258 (or 1589256 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 19071012 is about 4367.0369817532. The cubic root of 19071012 is about 267.1721876044.

The spelling of 19071012 in words is "nineteen million, seventy-one thousand, twelve".