1366056354 has 64 divisors (see below), whose sum is σ = 3119477760. Its totient is φ = 395746560.

The previous prime is 1366056353. The next prime is 1366056359. The reversal of 1366056354 is 4536506631.

It is a happy number.

It is a super-2 number, since 2×1366056354² = 3732219924607546632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1366056353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81832 + ... + 97100.

It is an arithmetic number, because the mean of its divisors is an integer number (48741840).

Almost surely, 2^1366056354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366056354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559738880).

1366056354 is an abundant number, since it is smaller than the sum of its proper divisors (1753421406).

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

1366056354 is a wasteful number, since it uses less digits than its factorization.

1366056354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15355.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1366056354 is about 36960.1995936169. The cubic root of 1366056354 is about 1109.5738303928.

The spelling of 1366056354 in words is "one billion, three hundred sixty-six million, fifty-six thousand, three hundred fifty-four".