1383142749 has 32 divisors (see below), whose sum is σ = 1933642368. Its totient is φ = 878592000.

The previous prime is 1383142741. The next prime is 1383142771. The reversal of 1383142749 is 9472413831.

It is not a de Polignac number, because 1383142749 - 2³ = 1383142741 is a prime.

It is a super-2 number, since 2×1383142749² = 3826167728222554002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1383142749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383142741) 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, 2157469 + ... + 2158109.

It is an arithmetic number, because the mean of its divisors is an integer number (60426324).

Almost surely, 2^1383142749 is an apocalyptic number.

It is an amenable number.

1383142749 is a deficient number, since it is larger than the sum of its proper divisors (550499619).

1383142749 is a wasteful number, since it uses less digits than its factorization.

1383142749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its digits is 145152, while the sum is 42.

The square root of 1383142749 is about 37190.6271659944. The cubic root of 1383142749 is about 1114.1807945004.

The spelling of 1383142749 in words is "one billion, three hundred eighty-three million, one hundred forty-two thousand, seven hundred forty-nine".