1154344438 has 16 divisors (see below), whose sum is σ = 1974399840. Its totient is φ = 501434496.

The previous prime is 1154344423. The next prime is 1154344439. The reversal of 1154344438 is 8344434511.

It is a super-2 number, since 2×1154344438² = 2665022163083071688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1154344397 and 1154344406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154344439) 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, 1305378 + ... + 1306261.

It is an arithmetic number, because the mean of its divisors is an integer number (123399990).

Almost surely, 2^1154344438 is an apocalyptic number.

1154344438 is a deficient number, since it is larger than the sum of its proper divisors (820055402).

1154344438 is a wasteful number, since it uses less digits than its factorization.

1154344438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611671.

The product of its digits is 92160, while the sum is 37.

The square root of 1154344438 is about 33975.6447768103. The cubic root of 1154344438 is about 1049.0072061114.

Adding to 1154344438 its reverse (8344434511), we get a palindrome (9498778949).

The spelling of 1154344438 in words is "one billion, one hundred fifty-four million, three hundred forty-four thousand, four hundred thirty-eight".