1600391489251 has 2 divisors, whose sum is σ = 1600391489252. Its totient is φ = 1600391489250.

The previous prime is 1600391489183. The next prime is 1600391489269. The reversal of 1600391489251 is 1529841930061.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1600391489251 is a prime.

It is a super-2 number, since 2×1600391489251² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1600391489195 and 1600391489204.

It is not a weakly prime, because it can be changed into another prime (1600391429251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800195744625 + 800195744626.

It is an arithmetic number, because the mean of its divisors is an integer number (800195744626).

Almost surely, 2^{1600391489251} is an apocalyptic number.

1600391489251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600391489251 is an equidigital number, since it uses as much as digits as its factorization.

1600391489251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 1600391489251 in words is "one trillion, six hundred billion, three hundred ninety-one million, four hundred eighty-nine thousand, two hundred fifty-one".