1369197820 has 48 divisors (see below), whose sum is σ = 3007549440. Its totient is φ = 522606656.

The previous prime is 1369197811. The next prime is 1369197853. The reversal of 1369197820 is 287919631.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200421 + ... + 207139.

It is an arithmetic number, because the mean of its divisors is an integer number (62657280).

Almost surely, 2^1369197820 is an apocalyptic number.

1369197820 is a gapful number since it is divisible by the number (10) 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 1369197820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503774720).

1369197820 is an abundant number, since it is smaller than the sum of its proper divisors (1638351620).

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

1369197820 is a wasteful number, since it uses less digits than its factorization.

1369197820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194 (or 7192 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1369197820 is about 37002.6731466796. The cubic root of 1369197820 is about 1110.4237269812.

The spelling of 1369197820 in words is "one billion, three hundred sixty-nine million, one hundred ninety-seven thousand, eight hundred twenty".