1138140402 has 32 divisors (see below), whose sum is σ = 2664918144. Its totient is φ = 317251200.

The previous prime is 1138140401. The next prime is 1138140403. The reversal of 1138140402 is 2040418311.

1138140402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1138140401) and next prime (1138140403).

It is not an unprimeable number, because it can be changed into a prime (1138140401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328749 + ... + 332192.

It is an arithmetic number, because the mean of its divisors is an integer number (83278692).

Almost surely, 2^1138140402 is an apocalyptic number.

1138140402 is an abundant number, since it is smaller than the sum of its proper divisors (1526777742).

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

1138140402 is a wasteful number, since it uses less digits than its factorization.

1138140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660994.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1138140402 is about 33736.3365231022. The cubic root of 1138140402 is about 1044.0756007994.

Adding to 1138140402 its reverse (2040418311), we get a palindrome (3178558713).

The spelling of 1138140402 in words is "one billion, one hundred thirty-eight million, one hundred forty thousand, four hundred two".