1537143457 has 2 divisors, whose sum is σ = 1537143458. Its totient is φ = 1537143456.

The previous prime is 1537143427. The next prime is 1537143467. The reversal of 1537143457 is 7543417351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799532176 + 737611281 = 28276^2 + 27159^2 .

It is an emirp because it is prime and its reverse (7543417351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1537143457 - 2⁷ = 1537143329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1537143427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768571728 + 768571729.

It is an arithmetic number, because the mean of its divisors is an integer number (768571729).

Almost surely, 2^1537143457 is an apocalyptic number.

It is an amenable number.

1537143457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1537143457 is an equidigital number, since it uses as much as digits as its factorization.

1537143457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176400, while the sum is 40.

The square root of 1537143457 is about 39206.4211195054. The cubic root of 1537143457 is about 1154.0858960560.

It can be divided in two parts, 1537143 and 457, that added together give a square (1537600 = 1240²).

The spelling of 1537143457 in words is "one billion, five hundred thirty-seven million, one hundred forty-three thousand, four hundred fifty-seven".