1901512492026 has 64 divisors (see below), whose sum is σ = 4489902981120. Its totient is φ = 525367140480.

The previous prime is 1901512492013. The next prime is 1901512492043. The reversal of 1901512492026 is 6202942151091.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1177470 + ... + 2278038.

It is an arithmetic number, because the mean of its divisors is an integer number (70154734080).

Almost surely, 2^{1901512492026} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1901512492026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2244951490560).

1901512492026 is an abundant number, since it is smaller than the sum of its proper divisors (2588390489094).

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

1901512492026 is a wasteful number, since it uses less digits than its factorization.

1901512492026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101939.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 1901512492026 in words is "one trillion, nine hundred one billion, five hundred twelve million, four hundred ninety-two thousand, twenty-six".