1138406810 has 16 divisors (see below), whose sum is σ = 2051642952. Its totient is φ = 454804800.

The previous prime is 1138406807. The next prime is 1138406813. The reversal of 1138406810 is 186048311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1138406807) and next prime (1138406813).

It can be written as a sum of positive squares in 4 ways, for example, as 1023424081 + 114982729 = 31991^2 + 10723^2 .

It is a super-2 number, since 2×1138406810² = 2591940130108752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1138406813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61121 + ... + 77540.

Almost surely, 2^1138406810 is an apocalyptic number.

1138406810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138406810 is a deficient number, since it is larger than the sum of its proper divisors (913236142).

1138406810 is a wasteful number, since it uses less digits than its factorization.

1138406810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139489.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1138406810 is about 33740.2846757404. The cubic root of 1138406810 is about 1044.1570577657.

The spelling of 1138406810 in words is "one billion, one hundred thirty-eight million, four hundred six thousand, eight hundred ten".