1619309436052 has 90 divisors (see below), whose sum is σ = 3633753192874. Its totient is φ = 630899327520.

The previous prime is 1619309436013. The next prime is 1619309436061. The reversal of 1619309436052 is 2506349039161.

It can be written as a sum of positive squares in only one way, i.e., 1225683695236 + 393625740816 = 1107106^2 + 627396^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 1619309435987 and 1619309436005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 465358 + ... + 1858810.

Almost surely, 2^{1619309436052} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1619309436052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816876596437).

1619309436052 is an abundant number, since it is smaller than the sum of its proper divisors (2014443756822).

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

1619309436052 is a wasteful number, since it uses less digits than its factorization.

1619309436052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393507 (or 1393473 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 1619309436052 in words is "one trillion, six hundred nineteen billion, three hundred nine million, four hundred thirty-six thousand, fifty-two".