1356293990 has 16 divisors (see below), whose sum is σ = 2453982048. Its totient is φ = 539705856.

The previous prime is 1356293957. The next prime is 1356293999. The reversal of 1356293990 is 993926531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356293999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349442 + ... + 353301.

It is an arithmetic number, because the mean of its divisors is an integer number (153373878).

Almost surely, 2^1356293990 is an apocalyptic number.

1356293990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1356293990 is a deficient number, since it is larger than the sum of its proper divisors (1097688058).

1356293990 is a wasteful number, since it uses less digits than its factorization.

1356293990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702943.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 1356293990 is about 36827.8968989542. The cubic root of 1356293990 is about 1106.9243618735.

The spelling of 1356293990 in words is "one billion, three hundred fifty-six million, two hundred ninety-three thousand, nine hundred ninety".