1138820070 has 16 divisors (see below), whose sum is σ = 2733168240. Its totient is φ = 303685344.

The previous prime is 1138820069. The next prime is 1138820087. The reversal of 1138820070 is 700288311.

It is a happy number.

It is a super-2 number, since 2×1138820070² = 2593822303669609800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 37960669 = 1138820070 / (1 + 1 + 3 + 8 + 8 + 2 + 0 + 0 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18980305 + ... + 18980364.

It is an arithmetic number, because the mean of its divisors is an integer number (170823015).

Almost surely, 2^1138820070 is an apocalyptic number.

1138820070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138820070 is an abundant number, since it is smaller than the sum of its proper divisors (1594348170).

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

1138820070 is a wasteful number, since it uses less digits than its factorization.

1138820070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37960679.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1138820070 is about 33746.4082533238. The cubic root of 1138820070 is about 1044.2833910874.

The spelling of 1138820070 in words is "one billion, one hundred thirty-eight million, eight hundred twenty thousand, seventy".