1381694652 has 288 divisors, whose sum is σ = 4231604160. Its totient is φ = 388177920.

The previous prime is 1381694641. The next prime is 1381694653. The reversal of 1381694652 is 2564961831.

It is a super-2 number, since 2×1381694652² = 3818160222730802208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1381694598 and 1381694607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381694653) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18927288 + ... + 18927360.

It is an arithmetic number, because the mean of its divisors is an integer number (14693070).

Almost surely, 2^1381694652 is an apocalyptic number.

1381694652 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 1381694652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115802080).

1381694652 is an abundant number, since it is smaller than the sum of its proper divisors (2849909508).

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

1381694652 is a wasteful number, since it uses less digits than its factorization.

1381694652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 169 counting only the distinct ones).

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

The square root of 1381694652 is about 37171.1534929978. The cubic root of 1381694652 is about 1113.7918239801.

The spelling of 1381694652 in words is "one billion, three hundred eighty-one million, six hundred ninety-four thousand, six hundred fifty-two".