1145001478 has 4 divisors (see below), whose sum is σ = 1717502220. Its totient is φ = 572500738.

The previous prime is 1145001449. The next prime is 1145001491. The reversal of 1145001478 is 8741005411.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1145001478² = 2622056769244368968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286250368 + ... + 286250371.

It is an arithmetic number, because the mean of its divisors is an integer number (429375555).

Almost surely, 2^1145001478 is an apocalyptic number.

1145001478 is a deficient number, since it is larger than the sum of its proper divisors (572500742).

1145001478 is an equidigital number, since it uses as much as digits as its factorization.

1145001478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572500741.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 1145001478 is about 33837.8704708201. The cubic root of 1145001478 is about 1046.1694067597.

Adding to 1145001478 its reverse (8741005411), we get a palindrome (9886006889).

The spelling of 1145001478 in words is "one billion, one hundred forty-five million, one thousand, four hundred seventy-eight".