1992001902 has 16 divisors (see below), whose sum is σ = 4346186112. Its totient is φ = 603636920.

The previous prime is 1992001901. The next prime is 1992001903. The reversal of 1992001902 is 2091002991.

It is an interprime number because it is at equal distance from previous prime (1992001901) and next prime (1992001903).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992001901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15090858 + ... + 15090989.

It is an arithmetic number, because the mean of its divisors is an integer number (271636632).

Almost surely, 2^1992001902 is an apocalyptic number.

1992001902 is an abundant number, since it is smaller than the sum of its proper divisors (2354184210).

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

1992001902 is a wasteful number, since it uses less digits than its factorization.

1992001902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30181863.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1992001902 is about 44631.8485165022. The cubic root of 1992001902 is about 1258.2393107747.

It can be divided in two parts, 199200 and 1902, that added together give a palindrome (201102).

The spelling of 1992001902 in words is "one billion, nine hundred ninety-two million, one thousand, nine hundred two".