1254441640 has 32 divisors (see below), whose sum is σ = 2842812000. Its totient is φ = 498164544.

The previous prime is 1254441607. The next prime is 1254441641. The reversal of 1254441640 is 461444521.

It is not an unprimeable number, because it can be changed into a prime (1254441641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107250 + ... + 118369.

It is an arithmetic number, because the mean of its divisors is an integer number (88837875).

Almost surely, 2^1254441640 is an apocalyptic number.

1254441640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1254441640 is an abundant number, since it is smaller than the sum of its proper divisors (1588370360).

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

1254441640 is a wasteful number, since it uses less digits than its factorization.

1254441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225769 (or 225765 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1254441640 is about 35418.0976338369. The cubic root of 1254441640 is about 1078.4917332123.

The spelling of 1254441640 in words is "one billion, two hundred fifty-four million, four hundred forty-one thousand, six hundred forty".