1348991801 has 2 divisors, whose sum is σ = 1348991802. Its totient is φ = 1348991800.

The previous prime is 1348991783. The next prime is 1348991821. The reversal of 1348991801 is 1081998431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712943401 + 636048400 = 26701^2 + 25220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1348991801 - 2⁶ = 1348991737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1348991821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674495900 + 674495901.

It is an arithmetic number, because the mean of its divisors is an integer number (674495901).

Almost surely, 2^1348991801 is an apocalyptic number.

It is an amenable number.

1348991801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348991801 is an equidigital number, since it uses as much as digits as its factorization.

1348991801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 1348991801 is about 36728.6237286398. The cubic root of 1348991801 is about 1104.9342524164.

The spelling of 1348991801 in words is "one billion, three hundred forty-eight million, nine hundred ninety-one thousand, eight hundred one".