1373549971 has 2 divisors, whose sum is σ = 1373549972. Its totient is φ = 1373549970.

The previous prime is 1373549941. The next prime is 1373550023. The reversal of 1373549971 is 1799453731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1373549971 - 2¹⁵ = 1373517203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373549911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686774985 + 686774986.

It is an arithmetic number, because the mean of its divisors is an integer number (686774986).

Almost surely, 2^1373549971 is an apocalyptic number.

1373549971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373549971 is an equidigital number, since it uses as much as digits as its factorization.

1373549971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 49.

The square root of 1373549971 is about 37061.4350909406. The cubic root of 1373549971 is about 1111.5990186310.

The spelling of 1373549971 in words is "one billion, three hundred seventy-three million, five hundred forty-nine thousand, nine hundred seventy-one".