1534865900381 has 8 divisors (see below), whose sum is σ = 1674424744128. Its totient is φ = 1395311320000.

The previous prime is 1534865900369. The next prime is 1534865900419. The reversal of 1534865900381 is 1830095684351.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1534865900381 - 2⁶ = 1534865900317 is a prime.

It is a super-2 number, since 2×1534865900381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1534865900341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288425 + ... + 1775646.

It is an arithmetic number, because the mean of its divisors is an integer number (209303093016).

Almost surely, 2^{1534865900381} is an apocalyptic number.

1534865900381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1534865900381 is a deficient number, since it is larger than the sum of its proper divisors (139558843747).

1534865900381 is a wasteful number, since it uses less digits than its factorization.

1534865900381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131683.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 1534865900381 in words is "one trillion, five hundred thirty-four billion, eight hundred sixty-five million, nine hundred thousand, three hundred eighty-one".