1071999377 has 2 divisors, whose sum is σ = 1071999378. Its totient is φ = 1071999376.

The previous prime is 1071999371. The next prime is 1071999403. The reversal of 1071999377 is 7739991701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026625681 + 45373696 = 32041^2 + 6736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071999377 - 2²⁰ = 1070950801 is a prime.

It is a super-2 number, since 2×1071999377² = 2298365328576776258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1071999371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535999688 + 535999689.

It is an arithmetic number, because the mean of its divisors is an integer number (535999689).

Almost surely, 2^1071999377 is an apocalyptic number.

It is an amenable number.

1071999377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071999377 is an equidigital number, since it uses as much as digits as its factorization.

1071999377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750141, while the sum is 53.

The square root of 1071999377 is about 32741.4015735429. The cubic root of 1071999377 is about 1023.4457911215.

The spelling of 1071999377 in words is "one billion, seventy-one million, nine hundred ninety-nine thousand, three hundred seventy-seven".