1491100257043 has 8 divisors (see below), whose sum is σ = 1569615312320. Its totient is φ = 1412588811240.

The previous prime is 1491100257019. The next prime is 1491100257077. The reversal of 1491100257043 is 3407520011941.

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 1491100257043 - 2¹³ = 1491100248851 is a prime.

It is a super-2 number, since 2×1491100257043² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1491100256993 and 1491100257011.

It is not an unprimeable number, because it can be changed into a prime (1491100257013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32913 + ... + 1727218.

It is an arithmetic number, because the mean of its divisors is an integer number (196201914040).

Almost surely, 2^{1491100257043} is an apocalyptic number.

1491100257043 is a deficient number, since it is larger than the sum of its proper divisors (78515055277).

1491100257043 is a wasteful number, since it uses less digits than its factorization.

1491100257043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804737.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 1491100257043 its reverse (3407520011941), we get a palindrome (4898620268984).

The spelling of 1491100257043 in words is "one trillion, four hundred ninety-one billion, one hundred million, two hundred fifty-seven thousand, forty-three".