151669540 has 48 divisors (see below), whose sum is σ = 348445440. Its totient is φ = 54996480.

The previous prime is 151669519. The next prime is 151669541. The reversal of 151669540 is 45966151.

It is a self number, because there is not a number n which added to its sum of digits gives 151669540.

It is not an unprimeable number, because it can be changed into a prime (151669541) 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, 101116 + ... + 102604.

It is an arithmetic number, because the mean of its divisors is an integer number (7259280).

Almost surely, 2^151669540 is an apocalyptic number.

151669540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151669540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174222720).

151669540 is an abundant number, since it is smaller than the sum of its proper divisors (196775900).

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

151669540 is a wasteful number, since it uses less digits than its factorization.

151669540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 151669540 is about 12315.4187910927. The cubic root of 151669540 is about 533.2932947373.

The spelling of 151669540 in words is "one hundred fifty-one million, six hundred sixty-nine thousand, five hundred forty".