1651601141 has 2 divisors, whose sum is σ = 1651601142. Its totient is φ = 1651601140.

The previous prime is 1651601123. The next prime is 1651601173. The reversal of 1651601141 is 1411061561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1446280900 + 205320241 = 38030^2 + 14329^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651601141 - 2¹⁴ = 1651584757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1651601141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651601111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825800570 + 825800571.

It is an arithmetic number, because the mean of its divisors is an integer number (825800571).

Almost surely, 2^1651601141 is an apocalyptic number.

It is an amenable number.

1651601141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651601141 is an equidigital number, since it uses as much as digits as its factorization.

1651601141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1651601141 is about 40639.8959275242. The cubic root of 1651601141 is about 1182.0478518443.

The spelling of 1651601141 in words is "one billion, six hundred fifty-one million, six hundred one thousand, one hundred forty-one".