1497430157 has 4 divisors (see below), whose sum is σ = 1562535840. Its totient is φ = 1432324476.

The previous prime is 1497430127. The next prime is 1497430189. The reversal of 1497430157 is 7510347941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1497430157 - 2¹² = 1497426061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497430127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32552807 + ... + 32552852.

It is an arithmetic number, because the mean of its divisors is an integer number (390633960).

Almost surely, 2^1497430157 is an apocalyptic number.

It is an amenable number.

1497430157 is a deficient number, since it is larger than the sum of its proper divisors (65105683).

1497430157 is an equidigital number, since it uses as much as digits as its factorization.

1497430157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65105682.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1497430157 is about 38696.6427096719. The cubic root of 1497430157 is about 1144.0601497890.

The spelling of 1497430157 in words is "one billion, four hundred ninety-seven million, four hundred thirty thousand, one hundred fifty-seven".