1138717420 has 24 divisors (see below), whose sum is σ = 2468446848. Its totient is φ = 440793600.

The previous prime is 1138717417. The next prime is 1138717423. The reversal of 1138717420 is 247178311.

It is an interprime number because it is at equal distance from previous prime (1138717417) and next prime (1138717423).

It is a super-2 number, since 2×1138717420² = 2593354725222912800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1138717423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917701 + ... + 918940.

It is an arithmetic number, because the mean of its divisors is an integer number (102851952).

Almost surely, 2^1138717420 is an apocalyptic number.

1138717420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138717420 is an abundant number, since it is smaller than the sum of its proper divisors (1329729428).

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

1138717420 is a wasteful number, since it uses less digits than its factorization.

1138717420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836681 (or 1836679 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 1138717420 is about 33744.8873164514. The cubic root of 1138717420 is about 1044.2520139004.

The spelling of 1138717420 in words is "one billion, one hundred thirty-eight million, seven hundred seventeen thousand, four hundred twenty".