1497145840 has 40 divisors (see below), whose sum is σ = 3483058320. Its totient is φ = 598480896.

The previous prime is 1497145829. The next prime is 1497145883. The reversal of 1497145840 is 485417941.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146167 + ... + 156073.

It is an arithmetic number, because the mean of its divisors is an integer number (87076458).

Almost surely, 2^1497145840 is an apocalyptic number.

1497145840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1497145840 is an abundant number, since it is smaller than the sum of its proper divisors (1985912480).

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

1497145840 is a wasteful number, since it uses less digits than its factorization.

1497145840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11809 (or 11803 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1497145840 is about 38692.9688703258. The cubic root of 1497145840 is about 1143.9877376553.

The spelling of 1497145840 in words is "one billion, four hundred ninety-seven million, one hundred forty-five thousand, eight hundred forty".