1150020997 has 2 divisors, whose sum is σ = 1150020998. Its totient is φ = 1150020996.

The previous prime is 1150020973. The next prime is 1150021099. The reversal of 1150020997 is 7990200511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742344516 + 407676481 = 27246^2 + 20191^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150020997 - 2²³ = 1141632389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150020397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575010498 + 575010499.

It is an arithmetic number, because the mean of its divisors is an integer number (575010499).

Almost surely, 2^1150020997 is an apocalyptic number.

It is an amenable number.

1150020997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150020997 is an equidigital number, since it uses as much as digits as its factorization.

1150020997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 1150020997 is about 33911.9594980886. The cubic root of 1150020997 is about 1047.6959294626.

The spelling of 1150020997 in words is "one billion, one hundred fifty million, twenty thousand, nine hundred ninety-seven".