1254468645 has 24 divisors (see below), whose sum is σ = 2268953856. Its totient is φ = 639960288.

The previous prime is 1254468643. The next prime is 1254468653. The reversal of 1254468645 is 5468644521.

It is a happy number.

1254468645 is a `hidden beast` number, since 1 + 2 + 544 + 68 + 6 + 45 = 666.

It is not a de Polignac number, because 1254468645 - 2¹ = 1254468643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1254468645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254468643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604989 + ... + 607058.

It is an arithmetic number, because the mean of its divisors is an integer number (94539744).

Almost surely, 2^1254468645 is an apocalyptic number.

1254468645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1254468645 is a deficient number, since it is larger than the sum of its proper divisors (1014485211).

1254468645 is a wasteful number, since it uses less digits than its factorization.

1254468645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212081 (or 1212078 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 1254468645 is about 35418.4788634408. The cubic root of 1254468645 is about 1078.4994722359.

The spelling of 1254468645 in words is "one billion, two hundred fifty-four million, four hundred sixty-eight thousand, six hundred forty-five".