1451263997 has 2 divisors, whose sum is σ = 1451263998. Its totient is φ = 1451263996.

The previous prime is 1451263969. The next prime is 1451264027. The reversal of 1451263997 is 7993621541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804629956 + 646634041 = 28366^2 + 25429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451263997 - 2⁸ = 1451263741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451263937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725631998 + 725631999.

It is an arithmetic number, because the mean of its divisors is an integer number (725631999).

Almost surely, 2^1451263997 is an apocalyptic number.

It is an amenable number.

1451263997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451263997 is an equidigital number, since it uses as much as digits as its factorization.

1451263997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 47.

The square root of 1451263997 is about 38095.4590076035. The cubic root of 1451263997 is about 1132.1799869988.

The spelling of 1451263997 in words is "one billion, four hundred fifty-one million, two hundred sixty-three thousand, nine hundred ninety-seven".