2148521386 has 16 divisors (see below), whose sum is σ = 3516902208. Its totient is φ = 976284000.

The previous prime is 2148521377. The next prime is 2148521399. The reversal of 2148521386 is 6831258412.

It is a super-2 number, since 2×2148521386² = 9232288292198721992, which contains 22 as substring.

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, 62086 + ... + 90286.

It is an arithmetic number, because the mean of its divisors is an integer number (219806388).

Almost surely, 2^2148521386 is an apocalyptic number.

2148521386 is a deficient number, since it is larger than the sum of its proper divisors (1368380822).

2148521386 is a wasteful number, since it uses less digits than its factorization.

2148521386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31677.

The product of its digits is 92160, while the sum is 40.

The square root of 2148521386 is about 46352.1454303897. The cubic root of 2148521386 is about 1290.3669380606.

Adding to 2148521386 its reverse (6831258412), we get a palindrome (8979779798).

The spelling of 2148521386 in words is "two billion, one hundred forty-eight million, five hundred twenty-one thousand, three hundred eighty-six".