2187354489 has 16 divisors (see below), whose sum is σ = 2929635072. Its totient is φ = 1451668608.

The previous prime is 2187354443. The next prime is 2187354497. The reversal of 2187354489 is 9844537812.

It is a happy number.

It is not a de Polignac number, because 2187354489 - 2¹³ = 2187346297 is a prime.

It is a super-2 number, since 2×2187354489² = 9569039321096902242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2187354989) 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, 1335379 + ... + 1337015.

It is an arithmetic number, because the mean of its divisors is an integer number (183102192).

Almost surely, 2^2187354489 is an apocalyptic number.

It is an amenable number.

2187354489 is a deficient number, since it is larger than the sum of its proper divisors (742280583).

2187354489 is a wasteful number, since it uses less digits than its factorization.

2187354489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376.

The product of its digits is 1935360, while the sum is 51.

The square root of 2187354489 is about 46769.1617307815. The cubic root of 2187354489 is about 1298.0947413956.

The spelling of 2187354489 in words is "two billion, one hundred eighty-seven million, three hundred fifty-four thousand, four hundred eighty-nine".