1144632738 has 64 divisors (see below), whose sum is σ = 2402611200. Its totient is φ = 363242880.

The previous prime is 1144632733. The next prime is 1144632739. The reversal of 1144632738 is 8372364411.

It is a junction number, because it is equal to n+sod(n) for n = 1144632696 and 1144632705.

It is not an unprimeable number, because it can be changed into a prime (1144632733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1813683 + ... + 1814313.

It is an arithmetic number, because the mean of its divisors is an integer number (37540800).

Almost surely, 2^1144632738 is an apocalyptic number.

1144632738 is an abundant number, since it is smaller than the sum of its proper divisors (1257978462).

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

1144632738 is a wasteful number, since it uses less digits than its factorization.

1144632738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its digits is 96768, while the sum is 39.

The square root of 1144632738 is about 33832.4214031452. The cubic root of 1144632738 is about 1046.0570907692.

The spelling of 1144632738 in words is "one billion, one hundred forty-four million, six hundred thirty-two thousand, seven hundred thirty-eight".