1146265381 has 2 divisors, whose sum is σ = 1146265382. Its totient is φ = 1146265380.

The previous prime is 1146265349. The next prime is 1146265387. The reversal of 1146265381 is 1835626411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 653824900 + 492440481 = 25570^2 + 22191^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146265381 - 2⁵ = 1146265349 is a prime.

It is a super-2 number, since 2×1146265381² = 2627848647358150322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1146265381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146265387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573132690 + 573132691.

It is an arithmetic number, because the mean of its divisors is an integer number (573132691).

Almost surely, 2^1146265381 is an apocalyptic number.

It is an amenable number.

1146265381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146265381 is an equidigital number, since it uses as much as digits as its factorization.

1146265381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 1146265381 is about 33856.5411848287. The cubic root of 1146265381 is about 1046.5542011474.

The spelling of 1146265381 in words is "one billion, one hundred forty-six million, two hundred sixty-five thousand, three hundred eighty-one".