1145221374 has 32 divisors (see below), whose sum is σ = 2514017664. Its totient is φ = 344904480.

The previous prime is 1145221351. The next prime is 1145221387. The reversal of 1145221374 is 4731225411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42469 + ... + 63984.

It is an arithmetic number, because the mean of its divisors is an integer number (78563052).

Almost surely, 2^1145221374 is an apocalyptic number.

1145221374 is an abundant number, since it is smaller than the sum of its proper divisors (1368796290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145221374 is a wasteful number, since it uses less digits than its factorization.

1145221374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106632.

The product of its digits is 6720, while the sum is 30.

The square root of 1145221374 is about 33841.1195736784. The cubic root of 1145221374 is about 1046.2363742839.

Adding to 1145221374 its reverse (4731225411), we get a palindrome (5876446785).

The spelling of 1145221374 in words is "one billion, one hundred forty-five million, two hundred twenty-one thousand, three hundred seventy-four".