1210555164 has 48 divisors (see below), whose sum is σ = 3476469248. Its totient is φ = 319267008.

The previous prime is 1210555147. The next prime is 1210555169. The reversal of 1210555164 is 4615550121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210555169) 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, 553192 + ... + 555375.

Almost surely, 2^1210555164 is an apocalyptic number.

1210555164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1210555164 is an abundant number, since it is smaller than the sum of its proper divisors (2265914084).

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

1210555164 is a wasteful number, since it uses less digits than its factorization.

1210555164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108594 (or 1108592 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1210555164 is about 34793.0332681702. The cubic root of 1210555164 is about 1065.7651826475.

The spelling of 1210555164 in words is "one billion, two hundred ten million, five hundred fifty-five thousand, one hundred sixty-four".