7421730537 has 16 divisors (see below), whose sum is σ = 10837471680. Its totient is φ = 4489806912.

The previous prime is 7421730529. The next prime is 7421730571. The reversal of 7421730537 is 7350371247.

It is not a de Polignac number, because 7421730537 - 2³ = 7421730529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 7421730495 and 7421730504.

It is not an unprimeable number, because it can be changed into a prime (7421730577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610418 + ... + 1615019.

It is an arithmetic number, because the mean of its divisors is an integer number (677341980).

Almost surely, 2^7421730537 is an apocalyptic number.

It is an amenable number.

7421730537 is a deficient number, since it is larger than the sum of its proper divisors (3415741143).

7421730537 is a wasteful number, since it uses less digits than its factorization.

7421730537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225512.

The product of its (nonzero) digits is 123480, while the sum is 39.

The square root of 7421730537 is about 86149.4662606798. The cubic root of 7421730537 is about 1950.6007824052.

The spelling of 7421730537 in words is "seven billion, four hundred twenty-one million, seven hundred thirty thousand, five hundred thirty-seven".