1358404992 has 384 divisors, whose sum is σ = 4918717440. Its totient is φ = 364290048.

The previous prime is 1358404991. The next prime is 1358404997. The reversal of 1358404992 is 2994048531.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1358404991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3701193 + ... + 3701559.

It is an arithmetic number, because the mean of its divisors is an integer number (12809160).

Almost surely, 2^1358404992 is an apocalyptic number.

1358404992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1358404992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2459358720).

1358404992 is an abundant number, since it is smaller than the sum of its proper divisors (3560312448).

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

1358404992 is an equidigital number, since it uses as much as digits as its factorization.

1358404992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1358404992 is about 36856.5461214151. The cubic root of 1358404992 is about 1107.4983545030.

The spelling of 1358404992 in words is "one billion, three hundred fifty-eight million, four hundred four thousand, nine hundred ninety-two".