1491337534 has 16 divisors (see below), whose sum is σ = 2278056960. Its totient is φ = 732073720.

The previous prime is 1491337517. The next prime is 1491337537. The reversal of 1491337534 is 4357331941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491337537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11967 + ... + 55909.

It is an arithmetic number, because the mean of its divisors is an integer number (142378560).

Almost surely, 2^1491337534 is an apocalyptic number.

1491337534 is a deficient number, since it is larger than the sum of its proper divisors (786719426).

1491337534 is a wasteful number, since it uses less digits than its factorization.

1491337534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44255.

The product of its digits is 136080, while the sum is 40.

The square root of 1491337534 is about 38617.8395822449. The cubic root of 1491337534 is about 1142.5064207751.

The spelling of 1491337534 in words is "one billion, four hundred ninety-one million, three hundred thirty-seven thousand, five hundred thirty-four".