1611201456 has 50 divisors (see below), whose sum is σ = 4663288212. Its totient is φ = 537066720.

The previous prime is 1611201341. The next prime is 1611201457. The reversal of 1611201456 is 6541021161.

1611201456 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 201 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1611201457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 620310 + ... + 622901.

Almost surely, 2^1611201456 is an apocalyptic number.

1611201456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1611201456 is an abundant number, since it is smaller than the sum of its proper divisors (3052086756).

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

1611201456 is a wasteful number, since it uses less digits than its factorization.

1611201456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243231 (or 1243216 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1611201456 is about 40139.7739903951. The cubic root of 1611201456 is about 1172.3301884302.

The spelling of 1611201456 in words is "one billion, six hundred eleven million, two hundred one thousand, four hundred fifty-six".