154740993 has 16 divisors (see below), whose sum is σ = 231162816. Its totient is φ = 91247040.

The previous prime is 154740983. The next prime is 154741003. The reversal of 154740993 is 399047451.

It is an interprime number because it is at equal distance from previous prime (154740983) and next prime (154741003).

It is not a de Polignac number, because 154740993 - 2¹⁷ = 154609921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154740913) 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, 62146 + ... + 64587.

It is an arithmetic number, because the mean of its divisors is an integer number (14447676).

Almost surely, 2^154740993 is an apocalyptic number.

It is an amenable number.

154740993 is a deficient number, since it is larger than the sum of its proper divisors (76421823).

154740993 is a wasteful number, since it uses less digits than its factorization.

154740993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126784.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 154740993 is about 12439.4932774611. The cubic root of 154740993 is about 536.8691634963.

It can be divided in two parts, 154 and 740993, that added together give a palindrome (741147).

The spelling of 154740993 in words is "one hundred fifty-four million, seven hundred forty thousand, nine hundred ninety-three".