1145154397 has 2 divisors, whose sum is σ = 1145154398. Its totient is φ = 1145154396.

The previous prime is 1145154379. The next prime is 1145154427. The reversal of 1145154397 is 7934515411.

Together with previous prime (1145154379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810483961 + 334670436 = 28469^2 + 18294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145154397 - 2¹⁵ = 1145121629 is a prime.

It is a super-2 number, since 2×1145154397² = 2622757185936867218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145154347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572577198 + 572577199.

It is an arithmetic number, because the mean of its divisors is an integer number (572577199).

Almost surely, 2^1145154397 is an apocalyptic number.

It is an amenable number.

1145154397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145154397 is an equidigital number, since it uses as much as digits as its factorization.

1145154397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 1145154397 is about 33840.1299790648. The cubic root of 1145154397 is about 1046.2159778955.

The spelling of 1145154397 in words is "one billion, one hundred forty-five million, one hundred fifty-four thousand, three hundred ninety-seven".