1138470215 has 16 divisors (see below), whose sum is σ = 1500595200. Its totient is φ = 825324192.

The previous prime is 1138470209. The next prime is 1138470217. The reversal of 1138470215 is 5120748311.

It is a cyclic number.

It is not a de Polignac number, because 1138470215 - 2⁴ = 1138470199 is a prime.

It is a super-2 number, since 2×1138470215² = 2592228860884292450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138470217) 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, 258335 + ... + 262704.

It is an arithmetic number, because the mean of its divisors is an integer number (93787200).

Almost surely, 2^1138470215 is an apocalyptic number.

1138470215 is a deficient number, since it is larger than the sum of its proper divisors (362124985).

1138470215 is a wasteful number, since it uses less digits than its factorization.

1138470215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521086.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1138470215 is about 33741.2242664667. The cubic root of 1138470215 is about 1044.1764426196.

The spelling of 1138470215 in words is "one billion, one hundred thirty-eight million, four hundred seventy thousand, two hundred fifteen".