1355819091 has 8 divisors (see below), whose sum is σ = 1972100544. Its totient is φ = 821708520.

The previous prime is 1355819089. The next prime is 1355819137. The reversal of 1355819091 is 1909185531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1355819091 - 2¹ = 1355819089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355819191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20542681 + ... + 20542746.

It is an arithmetic number, because the mean of its divisors is an integer number (246512568).

Almost surely, 2^1355819091 is an apocalyptic number.

1355819091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1355819091 is a deficient number, since it is larger than the sum of its proper divisors (616281453).

1355819091 is a wasteful number, since it uses less digits than its factorization.

1355819091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41085441.

The product of its (nonzero) digits is 48600, while the sum is 42.

The square root of 1355819091 is about 36821.4487900734. The cubic root of 1355819091 is about 1106.7951522669.

The spelling of 1355819091 in words is "one billion, three hundred fifty-five million, eight hundred nineteen thousand, ninety-one".