1142667648 has 192 divisors, whose sum is σ = 3612183120. Its totient is φ = 358318080.

The previous prime is 1142667637. The next prime is 1142667671. The reversal of 1142667648 is 8467662411.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 527688 + ... + 529848.

Almost surely, 2^1142667648 is an apocalyptic number.

1142667648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142667648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806091560).

1142667648 is an abundant number, since it is smaller than the sum of its proper divisors (2469515472).

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

1142667648 is an equidigital number, since it uses as much as digits as its factorization.

1142667648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207 (or 2183 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1142667648 is about 33803.3674062215. The cubic root of 1142667648 is about 1045.4581289877.

The spelling of 1142667648 in words is "one billion, one hundred forty-two million, six hundred sixty-seven thousand, six hundred forty-eight".