1999263372 has 48 divisors (see below), whose sum is σ = 4958204160. Its totient is φ = 625209408.

The previous prime is 1999263367. The next prime is 1999263397. The reversal of 1999263372 is 2733629991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19083 + ... + 66050.

It is an arithmetic number, because the mean of its divisors is an integer number (103295920).

Almost surely, 2^1999263372 is an apocalyptic number.

1999263372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1999263372 is an abundant number, since it is smaller than the sum of its proper divisors (2958940788).

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

1999263372 is a wasteful number, since it uses less digits than its factorization.

1999263372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85262 (or 85260 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 51.

The square root of 1999263372 is about 44713.1230401098. The cubic root of 1999263372 is about 1259.7663487133.

The spelling of 1999263372 in words is "one billion, nine hundred ninety-nine million, two hundred sixty-three thousand, three hundred seventy-two".