1000019191752 has 48 divisors (see below), whose sum is σ = 3095297499840. Its totient is φ = 285719768928.

The previous prime is 1000019191709. The next prime is 1000019191753. The reversal of 1000019191752 is 2571919100001.

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

It is not an unprimeable number, because it can be changed into a prime (1000019191753) 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, 992082028 + ... + 992083035.

It is an arithmetic number, because the mean of its divisors is an integer number (64485364580).

Almost surely, 2^{1000019191752} is an apocalyptic number.

1000019191752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000019191752 is an abundant number, since it is smaller than the sum of its proper divisors (2095278308088).

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

1000019191752 is a wasteful number, since it uses less digits than its factorization.

1000019191752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984165082 (or 1984165075 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 36.

The spelling of 1000019191752 in words is "one trillion, nineteen million, one hundred ninety-one thousand, seven hundred fifty-two".