1912701672 has 72 divisors (see below), whose sum is σ = 6025997250. Its totient is φ = 546485184.

The previous prime is 1912701653. The next prime is 1912701691. The reversal of 1912701672 is 2761072191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1912701653) and next prime (1912701691).

It can be written as a sum of positive squares in only one way, i.e., 1581971076 + 330730596 = 39774^2 + 18186^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 267547 + ... + 274602.

Almost surely, 2^1912701672 is an apocalyptic number.

1912701672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1912701672 is an abundant number, since it is smaller than the sum of its proper divisors (4113295578).

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

1912701672 is a wasteful number, since it uses less digits than its factorization.

1912701672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542175 (or 542161 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1912701672 is about 43734.4449147351. Note that the first 3 decimals coincide. The cubic root of 1912701672 is about 1241.3161692591.

The spelling of 1912701672 in words is "one billion, nine hundred twelve million, seven hundred one thousand, six hundred seventy-two".