1019143997 has 2 divisors, whose sum is σ = 1019143998. Its totient is φ = 1019143996.

The previous prime is 1019143981. The next prime is 1019144017. The reversal of 1019143997 is 7993419101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994203961 + 24940036 = 31531^2 + 4994^2 .

It is an emirp because it is prime and its reverse (7993419101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1019143997 - 2⁴ = 1019143981 is a prime.

It is a super-2 number, since 2×1019143997² = 2077308973242272018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1019103997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509571998 + 509571999.

It is an arithmetic number, because the mean of its divisors is an integer number (509571999).

Almost surely, 2^1019143997 is an apocalyptic number.

It is an amenable number.

1019143997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019143997 is an equidigital number, since it uses as much as digits as its factorization.

1019143997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 1019143997 is about 31924.0347857222. The cubic root of 1019143997 is about 1006.3410385747.

The spelling of 1019143997 in words is "one billion, nineteen million, one hundred forty-three thousand, nine hundred ninety-seven".