1902661596901 has 8 divisors (see below), whose sum is σ = 2051356590584. Its totient is φ = 1754300376000.

The previous prime is 1902661596839. The next prime is 1902661596947. The reversal of 1902661596901 is 1096951662091.

It is a happy number.

It is a Cunningham number, because it is equal to 1379370²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 1902661596900 = 1^2 + 1379370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1902661596901 - 2⁹ = 1902661596389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902661536901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83431350 + ... + 83454151.

It is an arithmetic number, because the mean of its divisors is an integer number (256419573823).

Almost surely, 2^{1902661596901} is an apocalyptic number.

It is an amenable number.

1902661596901 is a deficient number, since it is larger than the sum of its proper divisors (148694993683).

1902661596901 is a wasteful number, since it uses less digits than its factorization.

1902661596901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166886391.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 1902661596901 in words is "one trillion, nine hundred two billion, six hundred sixty-one million, five hundred ninety-six thousand, nine hundred one".