1145661454 has 12 divisors (see below), whose sum is σ = 1999062504. Its totient is φ = 490997724.

The previous prime is 1145661431. The next prime is 1145661457. The reversal of 1145661454 is 4541665411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145661457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5845114 + ... + 5845309.

It is an arithmetic number, because the mean of its divisors is an integer number (166588542).

Almost surely, 2^1145661454 is an apocalyptic number.

1145661454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1145661454 is a deficient number, since it is larger than the sum of its proper divisors (853401050).

1145661454 is a wasteful number, since it uses less digits than its factorization.

1145661454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690439 (or 11690432 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 1145661454 is about 33847.6210980920. The cubic root of 1145661454 is about 1046.3703712996.

The spelling of 1145661454 in words is "one billion, one hundred forty-five million, six hundred sixty-one thousand, four hundred fifty-four".