1901298166660 has 24 divisors (see below), whose sum is σ = 3993442825176. Its totient is φ = 760382757120.

The previous prime is 1901298166643. The next prime is 1901298166667. The reversal of 1901298166660 is 666618921091.

It can be written as a sum of positive squares in 4 ways, for example, as 78328336384 + 1822969830276 = 279872^2 + 1350174^2 .

It is a super-2 number, since 2×1901298166660² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1901298166667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8417601 + ... + 8640520.

It is an arithmetic number, because the mean of its divisors is an integer number (166393451049).

Almost surely, 2^{1901298166660} is an apocalyptic number.

1901298166660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1901298166660 is an abundant number, since it is smaller than the sum of its proper divisors (2092144658516).

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

1901298166660 is a wasteful number, since it uses less digits than its factorization.

1901298166660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17063703 (or 17063701 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 1901298166660 in words is "one trillion, nine hundred one billion, two hundred ninety-eight million, one hundred sixty-six thousand, six hundred sixty".