1438742835 has 24 divisors (see below), whose sum is σ = 2506892544. Its totient is φ = 763307520.

The previous prime is 1438742821. The next prime is 1438742839. The reversal of 1438742835 is 5382478341.

1438742835 is a `hidden beast` number, since 143 + 87 + 428 + 3 + 5 = 666.

It is not a de Polignac number, because 1438742835 - 2⁸ = 1438742579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1438742839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75102 + ... + 92291.

It is an arithmetic number, because the mean of its divisors is an integer number (104453856).

Almost surely, 2^1438742835 is an apocalyptic number.

1438742835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1438742835 is a deficient number, since it is larger than the sum of its proper divisors (1068149709).

1438742835 is a wasteful number, since it uses less digits than its factorization.

1438742835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167595 (or 167592 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 1438742835 is about 37930.7637017764. The cubic root of 1438742835 is about 1128.9145174343.

The spelling of 1438742835 in words is "one billion, four hundred thirty-eight million, seven hundred forty-two thousand, eight hundred thirty-five".